See the attached python example.
attachment treeview-insensitive.py
Thanks for the report and for the python example. It really helps to debug the problem :)
Should be fixed in git, commit a3232de. I tried it only with the python example you attached, plus with one change which sets "radio" property to TRUE (to check radio button as well), and it works for me there, now.
It looks good, Thanks.
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