Font update - does not work after new Text input

[dazzafact]

Version

3.6.3

Test Case

http://fabricjs.com/kitchensink
https://youtu.be/Ka-lTABJXjg

Information about environment

Chrome Browser 83.0.4103.116

Steps to reproduce

1 select Textbox with a text,
2. make sure cursor inside Textbox
3. ctrl+a to mark all Text
4. overwrite the old Text with some new words (by marking the old text)
5. After new input, you are not able to change font-Family anymore or other Font settings like font size. Shadows still works.

Expected Behavior

update font settings

Actual Behavior

Does not update Font Settings anymore