Base form labels becoming 3d

Many of my Base forms now show all control labels as 3D. I reset them to ‘without frame’ but they revert back to 3D. If I set them to flat, they show the outline and are not 3D.

I’m asking this here for now on the assumption that there has been a ‘feature’ change and that there is some easy setting to fix this.

This is quite new. I’m on Version: 25.2.5.2 (X86_64) / LibreOffice Community
Build ID: 520(Build:2)
CPU threads: 12; OS: Linux 6.8; UI render: default; VCL: gtk3
Locale: en-GB (en_GB.UTF-8); UI: en-GB
Ubuntu package version: 4:25.2.5~rc2-0ubuntu0.24.04.1~lo1
Calc: threaded

A bit to read

And the actual bug-report:

https://bugs.documentfoundation.org/show_bug.cgi?id=167358

Fixed versions 25.2.6 is not released, but “available”,
25.8 was released recently: I’m not sure, if Ubuntu will provide updates unless you are using Snap.