Created attachment 140599 [details]
After I opened settings, adjusting the location don't work, and it stopped responding after that. The only way to get it back is by changing the layout, but the program stopped working.

SUMMARY
Latte shows a weird blue rectangle when modifying the Dock/Panel settings, and it never disappears after closing the settings. Also, I notices that when I'm trying to change the location of the dock in Dock/Panel settings, the dock just disappears and leaving the strange blue rectangle, without moving itself to the direction it should be. It in the bottom as default, but the other three locations never worked. Also, when having Latte Dock opened, other of my applications starts working strange too. For example, Konsole will never open in normal size, it opens in a extremely small size that can't be even used properly. System settings won't even open. It just crash. (But I'm not sure about system settings because it turns out to be ok after rebooting)

I'm not whether sure if it's the problem of the code or the problem of myself, because I get these errors when trying to compile and it seems to be saying that I'm missing some stuff:
--------------------------------------------------------------
CMake Warning (dev) at /usr/share/ECM/modules/ECMFindModuleHelpers.cmake:112 (message):
  Your project should require at least CMake 3.16.0 to use FindKF5.cmake
Call Stack (most recent call first):
  /usr/share/ECM/find-modules/FindKF5.cmake:30 (ecm_find_package_version_check)
  CMakeLists.txt:21 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at /usr/share/ECM/modules/ECMFindModuleHelpers.cmake:112 (message):
  Your project should require at least CMake 3.16.0 to use FindXCB.cmake
Call Stack (most recent call first):
  /usr/share/ECM/find-modules/FindXCB.cmake:67 (ecm_find_package_version_check)
  CMakeLists.txt:32 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- qmlplugindump failed for QtQuick.
-- Could NOT find QtQuick-QMLModule (missing: QtQuick-QMLModule_FOUND) 
-- qmlplugindump failed for QtQuick.Controls.
-- Could NOT find QtQuick.Controls-QMLModule (missing: QtQuick.Controls-QMLModule_FOUND) 
-- qmlplugindump failed for QtQuick.Controls.Styles.Plasma.
-- Could NOT find QtQuick.Controls.Styles.Plasma-QMLModule (missing: QtQuick.Controls.Styles.Plasma-QMLModule_FOUND) 
-- qmlplugindump failed for QtGraphicalEffects.
-- Could NOT find QtGraphicalEffects-QMLModule (missing: QtGraphicalEffects-QMLModule_FOUND) 
-- qmlplugindump failed for org.kde.plasma.core.
-- Could NOT find org.kde.plasma.core-QMLModule (missing: org.kde.plasma.core-QMLModule_FOUND) 
-- qmlplugindump failed for org.kde.plasma.components.
-- Could NOT find org.kde.plasma.components-QMLModule (missing: org.kde.plasma.components-QMLModule_FOUND)
--------------------------------------------------------------

STEPS TO REPRODUCE
1. Open Latte Dock
2. Go to Dock/Panel settings
3. Change Direction (Don't Work)

OBSERVED RESULT
A strange blue rectangle stayed there, and I've never actually be able to change the settings. Also sometimes it just crash.

EXPECTED RESULT
Being able to change settings and modify stuff, strange blue rectangle disappear after closing/modifying settings.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 21.04
(available in About System)
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.84.0
Qt Version: 

ADDITIONAL INFORMATION
Using color, theme, window decoration -> ROUNDED
(Not sure if this effects or not)
Recently using Jazqa/kwin-quarter-tiling, but it stopped working for unclear reasons. So I removed it.