If you use two monitors with floating toolbars (also seems to happen if the toolbar is docked) it seems that the toolbar configuration is not being remembered
Version 4.3.2 windows XP
Glue points and some others behave the same way. Even if you lock the toolbar docked, save the document and exit, then reopen LibreDraw and the document, it’s not there.
When you reopen Gluepoints using Toolbars - Gluepoints, it reappears where it was docked and locked.
Also - you may want to add Libre to your spell check lexicon…