Editable text box caret blinks slowly when manually setting focus

For some reason, it appears that manually setting the focus (whether it be user, keyboard, or both) on an editable text box in UMG causes the caret to blink slowly. However if you were to manually select the text box with your mouse first, then manually setting focus at any point in the future will cause the caret to blink at a normal speed.

Versions tested (issue occurs in all versions):
4.19.2 - CL 4033788
4.20.3 - CL 4369336

1. Create a new Blueprint project
2. Create a new widget Blueprint, add an editable text box to the widget
3. Setup the widget's Tick event as shown in the attached image
4. Create a new player controller Blueprint
5. Setup the controller's BeginPlay event as shown in the attached image
6. Create a new game mode Blueprint and set the player controller class to be the player controller created in step 4
7. Set the game mode to be the map or project default
8. Launch PIE

Result: Notice that the editable text box's caret blinks very slowly.

Expected result: The caret should blink at the usual speed.