Description:
If you customize a toolbar to modify the icon of a button and then close LibreOffice, the changes are not retained next time you open LibreOffice. It applies to both Writer and Calc, at least.

Steps to Reproduce:
1. Customize a toolbar
2. Click an assigned command icon
3. Modify > Change Icon > pick an icon
4. Close LibreOffice
5. Open LibreOffice

Actual Results:
The button you've changed is reverted to its default icon (or text if no icon ).

Expected Results:
The button you've changed should retain its new icon.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
In addition to the screenshots I'll be including, it seems that when you change buttons that already have their own icons, these are reverted to text on the next LibreOffice run; the only way to fix them is to use the "Reset Icon" function.

I've tested the the issue in the oldest portable version I could install without risking my working environment, but it must be older than that. The icon changing feature seems to be working in OpenOffice.