Mailspring hangs when you open a window, help menu or try to select a folder from the dropdown list

Bug Reports
#1

Step to reproduce:

  1. open Mailspring
  2. click on the Window or Help menu

Step to reproduce:

  1. open Mailspring
  2. go to the Mail Rules
  3. select the “Move Message” in the “Perform these actions:” dropdown
  4. try to select the folder destination

Actual result: Mailspring hangs
Expected result: Available functions that lead to hangs.