Description:
NOTE: I wrote this up in great detail, but issue appears resolved in 7.5.3.1 I upgraded after writeup.
Altered severity to minor, in case detail is useful to have on file.


Using Libreoffice Calc under KDE (my daily driver), in latest release I can no longer drag the tabs of worksheets to reorder them.
When I click and hold a worksheet tab, then start dragging it to the desired position, the main worksheet view instead starts scrolling down the sheet.

This occurs whether attempting to by just dragging, or to copy with CTRL-drag.

Similarly in Libreoffice Draw, if I attempt to move an object to a different layer by dragging it to tab of the destination layer, the canvas simply scrolls down.




Steps to Reproduce:
for Calc
1. Open or create a Calc workbook with multiple sheets
2. Click and hold a sheet to drag/move to a new position on the tab bar


for Draw
1. Create a new drawing with an object
2. Click and hold an object to drag to a different layer tab


Actual Results:
for Calc
Sheet tab is not moved, but window scrolls instead - always downward, regardless or direction of drag.

for Draw
The object does not move to the desired destination layer, but the canvas scrolls instead - always downward, regardless or direction of drag.

Expected Results:
for Calc
Sheet should be moved to the new position in the tab bar.

for Draw
The object should be moved to the desired destination layerg.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
I have confirmed that this seems to be limited to QT-based environments.
The problem occurs in KDE/Plasma and LXQT sessions (on two different machines).

If I open an IceWM or Openbox session for the same user (eg same UserProfile) on the same machine, the previous normal expected behaviour occurs.
Also running same LO version on Windows is fine.



Version: 7.5.2.2 (X86_64) / LibreOffice Community
Build ID: 50(Build:2)
CPU threads: 8; OS: Linux 6.2; UI render: default; VCL: kf5 (cairo+xcb)
Locale: en-GB (en_GB.UTF-8); UI: en-GB
Calc: threaded