SUMMARY
When a new or existing file is opened in Krita, and the pen for my Wacom tablet is brought within range of the tablet, Krita crashes. This only happens when there is a file open--the tablet pen can be used as a mouse to open a file, and Krita only crashes once the file is opened. It is possible to use Krita with a mouse without it crashing.

STEPS TO REPRODUCE
1. Open Krita.
2. Open an existing file, or create a new file.
3. Bring the pen close to the tablet. 

OBSERVED RESULT
Krita crashes immediately.

EXPECTED RESULT
The pen would be able to be used normally as a drawing implement or as a mouse.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Solus Linux version 3.9999 with Gnome 3.28.2
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Here's the log I get if I run Krita from the terminal. I opened the program, used my pen and tablet to create a new 1000x1000 file, and since I was holding the pen within range of the tablet, it crashed as soon as the file opened.

gwendolyn@gwendolyn ~ $ krita
Set style "breeze"
Icon theme "breeze" not found.
Icon theme "gnome" not found.
Invalid profile :  "/usr/share/color/icc/colord/Crayons.icc" "Crayon Colors"
Invalid profile :  "/usr/share/color/icc/colord/x11-colors.icc" "X11 Colors"
QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'sip'
krita.scripting: "Traceback (most recent call last):"
krita.scripting: "  File \"/usr/lib/krita-python-libs/krita/__init__.py\", line 7, in <module>"
krita.scripting: "    from .api import *"
krita.scripting: "  File \"/usr/lib/krita-python-libs/krita/api.py\", line 28, in <module>"
krita.scripting: "    from PyKrita.krita import *"
krita.scripting: "ModuleNotFoundError: No module named 'sip'"
krita.scripting: "Could not import krita"
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Bold")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Light")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
>>> true QUrl("file:///home/gwendolyn/Desktop/art/bloodhound.kra") "file:///home/gwendolyn/Desktop/art/bloodhound.kra" "/home/gwendolyn/Desktop/art/bloodhound.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/cave.kra") "file:///home/gwendolyn/Desktop/art/cave.kra" "/home/gwendolyn/Desktop/art/cave.kra"
>>> true QUrl("file:///home/gwendolyn/Downloads/download20190104061708.png") "file:///home/gwendolyn/Downloads/download20190104061708.png" "/home/gwendolyn/Downloads/download20190104061708.png"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/quick_landscape.kra") "file:///home/gwendolyn/Desktop/art/quick_landscape.kra" "/home/gwendolyn/Desktop/art/quick_landscape.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mercy.kra") "file:///home/gwendolyn/Desktop/art/mercy.kra" "/home/gwendolyn/Desktop/art/mercy.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/bloodhound.kra") "file:///home/gwendolyn/Desktop/art/bloodhound.kra" "/home/gwendolyn/Desktop/art/bloodhound.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/cave.kra") "file:///home/gwendolyn/Desktop/art/cave.kra" "/home/gwendolyn/Desktop/art/cave.kra"
>>> true QUrl("file:///home/gwendolyn/Downloads/download20190104061708.png") "file:///home/gwendolyn/Downloads/download20190104061708.png" "/home/gwendolyn/Downloads/download20190104061708.png"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/quick_landscape.kra") "file:///home/gwendolyn/Desktop/art/quick_landscape.kra" "/home/gwendolyn/Desktop/art/quick_landscape.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mercy.kra") "file:///home/gwendolyn/Desktop/art/mercy.kra" "/home/gwendolyn/Desktop/art/mercy.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mountain_stamp.kra") "file:///home/gwendolyn/Desktop/art/mountain_stamp.kra" "/home/gwendolyn/Desktop/art/mountain_stamp.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mercy.kra") "file:///home/gwendolyn/Desktop/art/mercy.kra" "/home/gwendolyn/Desktop/art/mercy.kra"
>>> true QUrl("file:///home/gwendolyn/Pictures/capture.png") "file:///home/gwendolyn/Pictures/capture.png" "/home/gwendolyn/Pictures/capture.png"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/bloodhound.kra") "file:///home/gwendolyn/Desktop/art/bloodhound.kra" "/home/gwendolyn/Desktop/art/bloodhound.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/rose.kra") "file:///home/gwendolyn/Desktop/art/rose.kra" "/home/gwendolyn/Desktop/art/rose.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mountain_stamp.kra") "file:///home/gwendolyn/Desktop/art/mountain_stamp.kra" "/home/gwendolyn/Desktop/art/mountain_stamp.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/mercy.kra") "file:///home/gwendolyn/Desktop/art/mercy.kra" "/home/gwendolyn/Desktop/art/mercy.kra"
>>> true QUrl("file:///home/gwendolyn/Pictures/capture.png") "file:///home/gwendolyn/Pictures/capture.png" "/home/gwendolyn/Pictures/capture.png"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/bloodhound.kra") "file:///home/gwendolyn/Desktop/art/bloodhound.kra" "/home/gwendolyn/Desktop/art/bloodhound.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/rose.kra") "file:///home/gwendolyn/Desktop/art/rose.kra" "/home/gwendolyn/Desktop/art/rose.kra"
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/brushsize-decrease
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/opacity-decrease
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/opacity-increase
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/lightness-increase
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/lightness-decrease
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/zoom-in
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotate-canvas-left
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotation-reset
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotate-canvas-right
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/zoom-out
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/brushsize-increase
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/preset-switcher
file:///usr/lib64/qt5/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/edit-clear
>>> true QUrl("file:///home/gwendolyn/Pictures/capture.png") "file:///home/gwendolyn/Pictures/capture.png" "/home/gwendolyn/Pictures/capture.png"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/bloodhound.kra") "file:///home/gwendolyn/Desktop/art/bloodhound.kra" "/home/gwendolyn/Desktop/art/bloodhound.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/map.kra") "file:///home/gwendolyn/Desktop/art/map.kra" "/home/gwendolyn/Desktop/art/map.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/rose.kra") "file:///home/gwendolyn/Desktop/art/rose.kra" "/home/gwendolyn/Desktop/art/rose.kra"
>>> true QUrl("file:///home/gwendolyn/Desktop/art/cave.kra") "file:///home/gwendolyn/Desktop/art/cave.kra" "/home/gwendolyn/Desktop/art/cave.kra"
krita.lib.flake: "InteractionTool" : action "object_order_raise" conflicts with canvas action "rotate_canvas_right" shortcut: "Ctrl+]"
krita.lib.flake: "InteractionTool" : action "object_order_lower" conflicts with canvas action "rotate_canvas_left" shortcut: "Ctrl+["
krita.lib.flake: "InteractionTool" : action "object_order_raise" conflicts with canvas action "rotate_canvas_right" shortcut: "Ctrl+]"
krita.lib.flake: "InteractionTool" : action "object_order_lower" conflicts with canvas action "rotate_canvas_left" shortcut: "Ctrl+["
free(): double free detected in tcache 2
Aborted