Sometimes for a very unknown reason, GNOME adds reserved modifiers to the event retrieved from Clutter.get_current_event().get_state(). This causes an incorrect modifier mask to be calculated and a blink behavior if the popup timeout is 0.
To resolve this issue, we need to and the Clutter.get_current_event().get_state() with Clutter.ModifierType.MODIFIER_MASK which is a mask the contains a number to clear all the flags of the reserved modifiers.
Note that Clutter may add internal values to events which include reserved values such as MODIFIER_RESERVED_13_MASK. Your code should preserve and ignore them. You can use MODIFIER_MASK to remove all reserved values.
Sometimes for a very unknown reason,
GNOMEadds reserved modifiers to the event retrieved fromClutter.get_current_event().get_state(). This causes an incorrect modifier mask to be calculated and a blink behavior if thepopup timeoutis 0.To resolve this issue, we need to and the
Clutter.get_current_event().get_state()withClutter.ModifierType.MODIFIER_MASKwhich is a mask the contains a number to clear all the flags of the reserved modifiers.reference: https://valadoc.org/clutter-1.0/Clutter.ModifierType.html
Note that Clutter may add internal values to events which include reserved values such as MODIFIER_RESERVED_13_MASK. Your code should preserve and ignore them. You can use MODIFIER_MASK to remove all reserved values.