Properties panel refuses text

Wappler Version : 2.9.1
Operating System : Windows10

Expected behavior

Inserting text value in the Properties Panel (e.g. description list, tooltip)

Actual behavior

What actually happens?

I have this problem for some time.
When I enter a text value in the properties panel I can only enter 1 character after which the focus on the field disappears. I then help myself in Code-view to complete the text.