Issue: When editing a chain, opening the preferences for a new 'selection modifier' action causes Calibre to stop responding until I kill the process.
Running Calibre in debug mode doesn't show anything in the log after the "Hiding splash screen" of initial launch.
EDIT: It may be a result of my saved searches. If I switch to an alternate library with none, I get no freeze.
ANOTHER EDIT: I tested all my searches. All of them are valid, but as shown here, there's a
lot of searches, including hierarchical and templates:
