Cannot use keyboard to trigger Escape key in editor

I have tested and found that it is maybe truly a problem of input conflict. Here are the steps:

  1. I open a project and enter a map that does not use the ESC key input action, run in PIE mode and press ESC, it will exit PIE mode.
  2. But when I run a map that use the ESC key input action, ESC does not exit PIE mode.
  3. After that, enter the map without ESC input action , and ESC will not exit PIE mode since then.
  4. Close the project and reopen it, ESC works fine.
    I am not familiar with UE c++ codes, I hope it can be fixed in the future or future UE versions (or maybe it has been fixed in newer versions like 5.5?) Thank you for the reply! =)
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