Description:
I really like the "grouped bar compact mode" as the top bar changes depending on the context which makes it very easy to find a setting. 
By default the top bar will be in text mode and show text related options like text size, fonts, colours, etc, and after selecting an image it will change to image mode. But when I select text and the top bar changes back to text mode a part of the top bar isn't shown (I will add an attachment after filing this bug). 

This happens in Writer, but not in Impress, I haven't verified reproducibility in Calc or other LibreOffice apps. 

Steps to Reproduce:
1. Set UI to "grouped bar compact" mode, the top bar will change depending on the context.
2. Select an image to change the top bar to image mode
3. Place the cursor in a text field to change it back to text mode

Actual Results:
The lower row of the top bar will disappear and I have to click a button or text field in the upper row to bring it back.

Expected Results:
Show both the upper part and the lower part


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Information from Help - About LibreOffice:
Version: 7.3.0.3 / LibreOffice Community
Build ID: 30(Build:3)
CPU threads: 8; OS: Linux 5.16; UI render: default; VCL: kf5 (cairo+xcb)
Locale: nl-NL (nl_NL.UTF-8); UI: en-US
7.3.0-4
Calc: threaded

My OS and stuff:
Operating System: Arch Linux
KDE Plasma Version: 5.24.0
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.16.7-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-10300H CPU @ 2.50GHz
Memory: 7.6 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics