Hi. (´・ω・`)
Pull-down lists are unreadable because they overlap.
(https://i.imgur.com/nMYzBBi.gif)
EDIT:
I found that standard does not have this bug.
(https://i.imgur.com/Y8tx6QL.png)
This must have been changed (fixed) in standard "recently" - maybe last two years or so...
I remember that the lists in standard have been the same as in extended.
Add the combo box to the end of the dialog gui component list, i.e.add_component(&comobobox) versus the bottom of the dioalog may fix this.
I initially took prissi's advice backwards because of my poor Engrrrish, but now I finally understand it and have succeeded in fixing it.
Anyway thank you for your advise.
Please check pull request #170.
I believe that I have now merged this fix - thank you for your work on this.