UE5.7 fix for `UE-270589` causes held inputs to always re-trigger

Development Programming & Scripting
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https://github.com/EpicGames/UnrealEngine/commit/c57f0412770218344952b2450cc7258a33ae8fd3

  1. Create a boolean InputAction configured in an InputMappingContext with a “Pressed” trigger
  2. Bind to the ETriggerEvent::Triggered event. When this event fires, call AddMappingContext with another IMC
  3. ETriggerEvent::Triggered will now start firing every frame while the button is still held. This contradicts the bIgnoreAllPressedKeysUntilReleaseOnRebuild setting.
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I have the same issue. After looking into this, it appears to be a direct result of the fix for UE-270589. To fix it until Epic can address the issue, I added input.bRespectIMCPriortyForTriggers=falseto my DefaultEngine.ini config file. This will entirely disable the fix for UE-270589 which will cause the original issue it fixes to return, but the current state with the fix is worse than without it.