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Modal keymap customization from an addon is not restored properly
Open, Confirmed, MediumPublic


System Information
Operating system: Win10
Graphics card: nVidia Quadro 600

Blender Version
Broken: 2.80 (sub 41), branch: master, commit date: 2019-01-22 16:54, hash: 25889423d324
Worked: unsure

Short description of error
It seems that if an addon makes a customization to a modal keymap, this customization only works until you restart blender. After restart, the keymap is not restored properly (left blank) and the only way to fix is to disable/re-enable the addon again.

Exact steps for others to reproduce the error

  • Install and Enable the attached .py addon
    • It adds a modal keymap for circle select (makes it so that circle select is active only if you hold down the C key)
  • Save Preferences
  • Notice that things work correctly. Circle select is only active while holding down the C key
  • Restart blender
  • Notice the keymap no longer works. Check the keymap in user preferences and notice that the new entry is actually blanked out