Illustrator 25.2.1 (64-bit) on Windows 10 Home

Selecting the 'Create New' button on home screen (without no documents opened).

When configuring the document on the right pane of the New Document dialog box, I expect to be able to (consistently) select text (e.g. width and height values) in the text fields by doing a press-and-drag to highlight it on the right pane of the dialog box.

However, I wasn't able to highlight the text in the New Document dialog box. Instead, I have to press Backspace on the keyboard to delete the default before I can change them. Several tests have been done, and the result is the same.

N.A.