Created attachment 177906 [details]
note the un-rendered section on the left

*Environment:*
On my Mac (Monterey and previous OS version) AND on my OpenSuse Leap 15.3 (KDE/Plasma5 uname:`Linux localhost.localdomain 5.3.18-150300.59.43-preempt #1 SMP PREEMPT Sun Jan 23 19:27:23 UTC 2022 (c76af22) x86_64 x86_64 x86_64 GNU/Linux)` - both using an Acer UHD 4k2k screen

*LibreOffice:*
Version: 7.1.4.2 / LibreOffice Community
Build ID: 10(Build:2)
CPU threads: 8; OS: Linux 5.3; UI render: default; VCL: x11
Locale: en-GB (en_GB.UTF-8); UI: en-US
Calc: CL

*Issue:*
The background colour of the toolbar doesn't extend the whole width (it seems to be right justified but 'gives up'  about 3/4 of the way across a maximised window. The rest is left as silver - this is a problem for icons selected for a dark theme because all those on the left are near invisible against silver.