From the thread above, I have a wish regarding double note tremolos.
Because double note tremolos are imported from MusicXML files only if the MusicXML import preference Beam groups is activated, and deleted if you use Reset Beaming, it’s clear that they are implemented as beams.
Maybe that’s correct in a technical point of view because they looks like beams if they are connected to the stems. But double note tremolos should not be treated as beam in all situations. They should always be imported, and not deleted when you reset beams.