Problems with custom filter after installing 6.0

I copied my custom_filters.xml from gramps52 to gramps60. When I try to use a custom filter there is a dialog “Filter”, “Preparing” with a progress bar that just hangs at around 50%, I can’t close it either because then another dialog popups and tells me “Please do not force closing this importand dialog”. So I have to kill Gramps the hard way.

Is there a way to find out what’s going on? Configure some logging etc?
(The filter depends on other filters, so maybe I’m missing some filter addon. But some hint would be nice.)

(Gramps 6.0.0 on Windows 11)

This has been reported as bug #13725 - “Gramps 6.0.0 filter hangs in prepare phase”

Thanks for the information.