Please post the output of

  qdbus org.kde.KWin /KWin supportInformation

is the cursor huge in gtk apps or qt apps or all apps?

(In reply to Vlad Zahorodnii from comment #1)
> Please post the output of
> 
>   qdbus org.kde.KWin /KWin supportInformation
> 
> is the cursor huge in gtk apps or qt apps or all apps?

huge on Qt apps and Chrome but standard sized on GTK apps
oddly, GTK apps themselves are huuuge. this is on 200% scale btw


KWin Support Information:
The following information should be used when requesting support on e.g. https://forum.kde.org.
It provides information about the currently running instance, which options are used,
what OpenGL driver and which effects are running.
Please post the information provided underneath this introductory text to a paste bin service
like https://paste.kde.org instead of pasting into support threads.

==========================

Version
=======
KWin version: 5.23.0
Qt Version: 5.15.2
Qt compile version: 5.15.2
XCB compile version: 1.13.1

Operation Mode: Xwayland

Build Options
=============
KWIN_BUILD_DECORATIONS: yes
KWIN_BUILD_TABBOX: yes
KWIN_BUILD_ACTIVITIES: yes
HAVE_GBM: yes
HAVE_EGL_STREAMS: yes
HAVE_X11_XCB: yes
HAVE_EPOXY_GLX: yes
HAVE_WAYLAND_EGL: yes

X11
===
Vendor: The X.Org Foundation
Vendor Release: 12101002
Protocol Version/Revision: 11/0
SHAPE: yes; Version: 0x11
RANDR: yes; Version: 0x14
DAMAGE: yes; Version: 0x11
Composite: yes; Version: 0x4
RENDER: yes; Version: 0xb
XFIXES: yes; Version: 0x50
SYNC: yes; Version: 0x31
GLX: yes; Version: 0x0

Decoration
==========
Plugin: org.kde.breeze
Theme: 
Plugin recommends border size: None
Blur: 0
onAllDesktopsAvailable: true
alphaChannelSupported: true
closeOnDoubleClickOnMenu: false
decorationButtonsLeft: 5, 3, 4, 0
decorationButtonsRight: 9
borderSize: 0
gridUnit: 10
font: Roboto,10,-1,5,50,0,0,0,0,0
smallSpacing: 2
largeSpacing: 10

Platform
==========
Name: DRM
Active: true
Atomic Mode Setting on GPU 0: true
Using EGL Streams: false

Cursor
======
themeName: breeze_cursors
themeSize: 48

Options
=======
focusPolicy: 0
xwaylandCrashPolicy: 
xwaylandMaxCrashCount: 3
nextFocusPrefersMouse: false
clickRaise: true
autoRaise: false
autoRaiseInterval: 0
delayFocusInterval: 0
shadeHover: false
shadeHoverInterval: 250
separateScreenFocus: false
activeMouseScreen: true
placement: 4
focusPolicyIsReasonable: true
borderSnapZone: 10
windowSnapZone: 10
centerSnapZone: 0
snapOnlyWhenOverlapping: false
rollOverDesktops: true
focusStealingPreventionLevel: 1
operationTitlebarDblClick: 5000
operationMaxButtonLeftClick: 5000
operationMaxButtonMiddleClick: 5015
operationMaxButtonRightClick: 5014
commandActiveTitlebar1: 0
commandActiveTitlebar2: 28
commandActiveTitlebar3: 2
commandInactiveTitlebar1: 4
commandInactiveTitlebar2: 28
commandInactiveTitlebar3: 2
commandWindow1: 7
commandWindow2: 8
commandWindow3: 8
commandWindowWheel: 28
commandAll1: 10
commandAll2: 3
commandAll3: 14
keyCmdAllModKey: 16777250
showGeometryTip: false
condensedTitle: false
electricBorderMaximize: true
electricBorderTiling: true
electricBorderCornerRatio: 0.25
borderlessMaximizedWindows: false
killPingTimeout: 5000
hideUtilityWindowsForInactive: true
compositingMode: 1
useCompositing: true
hiddenPreviews: 1
glSmoothScale: 2
glStrictBinding: false
glStrictBindingFollowsDriver: true
glCoreProfile: true
glPreferBufferSwap: 101
glPlatformInterface: 2
windowsBlockCompositing: true
latencyPolicy: 
renderTimeEstimator: 

Screen Edges
============
desktopSwitching: false
desktopSwitchingMovingClients: false
cursorPushBackDistance: 1x1
timeThreshold: 150
reActivateThreshold: 350
actionTopLeft: 0
actionTop: 0
actionTopRight: 0
actionRight: 0
actionBottomRight: 0
actionBottom: 0
actionBottomLeft: 0
actionLeft: 0

Screens
=======
Multi-Head: no
Active screen follows mouse:  yes
Number of Screens: 1

Screen 0:
---------
Name: DP-1
Geometry: 0,0,1920x1080
Scale: 2
Refresh Rate: 59997
Adaptive Sync: automatic

Compositing
===========
Compositing is active
Compositing Type: OpenGL
OpenGL vendor string: AMD
OpenGL renderer string: Radeon RX 590 Series (POLARIS10, DRM 3.42.0, 5.14.11-200.fc34.x86_64, LLVM 12.0.1)
OpenGL version string: 4.6 (Core Profile) Mesa 21.1.8
OpenGL platform interface: EGL
OpenGL shading language version string: 4.60
Driver: RadeonSI
GPU class: Arctic Islands
OpenGL version: 4.6
GLSL version: 4.60
Mesa version: 21.1.8
Linux kernel version: 5.14.11
Direct rendering: Requires strict binding: no
GLSL shaders:  yes
Texture NPOT support:  yes
Virtual Machine:  no
OpenGL 2 Shaders are used

Loaded Effects:
---------------
zoom
kwin4_effect_fullscreen
kwin4_effect_sessionquit
kwin4_effect_windowaperture
kwin4_effect_morphingpopups
kwin4_effect_maximize
kwin4_effect_logout
kwin4_effect_login
kwin4_effect_frozenapp
kwin4_effect_fadingpopups
kwin4_effect_fade
kwin4_effect_dimscreen
kwin4_effect_dialogparent
slidingpopups
slide
screenshot
magiclamp
desktopgrid
colorpicker
wobblywindows
presentwindows
highlightwindow
blur
contrast
startupfeedback
screenedge
screentransform
kscreen

Currently Active Effects:
-------------------------
blur
contrast

Effect Settings:
----------------
zoom:
zoomFactor: 1.2
mousePointer: 0
mouseTracking: 0
focusTrackingEnabled: false
textCaretTrackingEnabled: false
focusDelay: 350
moveFactor: 20
targetZoom: 1

kwin4_effect_fullscreen:
pluginId: kwin4_effect_fullscreen
isActiveFullScreenEffect: false

kwin4_effect_sessionquit:
pluginId: kwin4_effect_sessionquit
isActiveFullScreenEffect: false

kwin4_effect_windowaperture:
pluginId: kwin4_effect_windowaperture
isActiveFullScreenEffect: false

kwin4_effect_morphingpopups:
pluginId: kwin4_effect_morphingpopups
isActiveFullScreenEffect: false

kwin4_effect_maximize:
pluginId: kwin4_effect_maximize
isActiveFullScreenEffect: false

kwin4_effect_logout:
pluginId: kwin4_effect_logout
isActiveFullScreenEffect: false

kwin4_effect_login:
pluginId: kwin4_effect_login
isActiveFullScreenEffect: false

kwin4_effect_frozenapp:
pluginId: kwin4_effect_frozenapp
isActiveFullScreenEffect: false

kwin4_effect_fadingpopups:
pluginId: kwin4_effect_fadingpopups
isActiveFullScreenEffect: false

kwin4_effect_fade:
pluginId: kwin4_effect_fade
isActiveFullScreenEffect: false

kwin4_effect_dimscreen:
pluginId: kwin4_effect_dimscreen
isActiveFullScreenEffect: false

kwin4_effect_dialogparent:
pluginId: kwin4_effect_dialogparent
isActiveFullScreenEffect: false

slidingpopups:
slideInDuration: 75
slideOutDuration: 125

slide:
duration: 250
horizontalGap: 45
verticalGap: 20
slideDocks: false
slideBackground: true

screenshot:

magiclamp:

desktopgrid:
zoomDuration: 150
border: 10
desktopNameAlignment: 0
layoutMode: 0
customLayoutRows: 1
usePresentWindows: true

colorpicker:

wobblywindows:
stiffness: 0.03
drag: 0.92
moveFactor: 0.2
xTesselation: 20
yTesselation: 20
minVelocity: 0
maxVelocity: 1000
stopVelocity: 0.5
minAcceleration: 0
maxAcceleration: 1000
stopAcceleration: 0.5
moveWobble: true
resizeWobble: true

presentwindows:
layoutMode: 0
showCaptions: true
showIcons: true
doNotCloseWindows: false
ignoreMinimized: false
accuracy: 20
fillGaps: true
fadeDuration: 75
showPanel: true
leftButtonWindow: 1
rightButtonWindow: 2
middleButtonWindow: 0
leftButtonDesktop: 2
middleButtonDesktop: 0
rightButtonDesktop: 0

highlightwindow:

blur:

contrast:

startupfeedback:
type: 1

screenedge:

screentransform:

kscreen:


Loaded Plugins:
---------------
kwin5_plugin_colord
kwin5_plugin_krunner
kwin5_plugin_nightcolor
kwin5_plugin_screencast

Available Plugins:
------------------
kwin5_plugin_colord
kwin5_plugin_krunner
kwin5_plugin_nightcolor
kwin5_plugin_screencast

based on the support info, it appears like the cursor size is 48, which is big. if you come from x11, you need to change the cursor size in system settings. on wayland, the cursor size is in logical pixels

(In reply to Vlad Zahorodnii from comment #3)
> based on the support info, it appears like the cursor size is 48, which is
> big. if you come from x11, you need to change the cursor size in system
> settings. on wayland, the cursor size is in logical pixels

Indeed, thanks! There is still a bug with GTK apps tho because they don't respect bigger cursors. Doesn't affect me because I want the 24 cursor and they do stay the same on 24 but they stay 24 too when 48 is selected

Yeah, various toolkits do their own thing. I needed to install GTK xdg desktop portal to make GTK apps respect the cursor theme...

Yeah actually, the huge cursor is how it's supposed to be at the 48px size, it's just that this never worked on X11 before. :) If you want it to be smaller, choose the 24px size.

So it's a GTK issue, or an issue with the settings not transferring over properly due to missing packages.