Cursor in Edit Game Rules menu does not blink

The bug

When a text field in the game rules editing menu is selected (accessible when creating a new world), the cursor doesn’t blink, unlike in chat, creative inventory, social interactions, recipe book, anvil, and more.

How to reproduce

1. Open Minecraft -> Singleplayer -> Create New World -> Game Rules
2. Click on a text field
   Observe how your cursor does not blink