I displayed the Edit Points toolbar by going to View>Toolbars>Edit Points.
After selecting a curve and going into points editing mode, I clicked off the curve and the Edit Points toolbar disappeared.
While it is normal for the toolbar to appear and disappear with the selection and deselection of a curve when in points editing mode, I did not expect the toolbar to disappear after opening it by going to View>Toolbars>Edit Points.
Reproduced with a recent master build:
Version: 184.108.40.206.alpha0+ (X86_64) / LibreOffice Community
Build ID: 61b41646c5a93ca24f2c9f143cdb0da2c9258989
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
If the toolbar is turned on via the menu, it remains visible until edit point mode is entered with Edit > Points (or F8), a shape is selected and then deselected. It then disappears.
I'd expect the toolbar to remain visible if I decided to show it by turning it on in the menu (even if everything is greyed out).
At least so the other toolbars don't jump to a different position every time edit point mode is entered.
Already the case in OOo 3.3, so inherited.
This particular case is probably a special case of bug 38850, bug 106846 or bug 107495. Maybe should be marked as a DUP of one of these?