Text in Captions Panel gets smaller when editing

Steps to reproduce:

1. In a sequence with captions, open the captions panel.
2. Make the text in the captions panel bigger by dragging the lower-right slider to the right. It gets bigger - nice.

3. Click to edit some of the text.
 
Result:

Exactly when you want the text to be big (ie. when you're typing stuff in/editing it), it gets microscopic.

Expected:

Text should remain at a legible size - which is very important when, for example, changing Premiere's dumb quotes to smart quotes.
 
System info
    Application: Premiere Pro (Beta) v25.4.0.47
    OS: Windows v10.0.19045, RAM: 127.91 GB GB, CPUs (logical): 32