Using 2020r2.1 under Mojave.
This is a problem that occurs with one of my TextAreas. It only occurs if the text I put there contains a 4-byte UTF8 character such as (U+1F4F7, UTF8: F0 9F 93 B7). What happens then is that the text may display in another size or another font or both.
It should look thus:
Then I have a button that loads a bad string into the TextArea, and it then looks like this:
If I click that button again to put the same string into the TextArea I get this:
Note the font change and strange spacing. Reloading the initial string and this happens:
And reloading it again gives the following for ever and ever:
I wondered if anyone had seen this before (as I say, only a problem with the 4-byte UTF8 characters) before I submit a feedback.