For example, after entering an administrative email address in tl-setup, one can't simply press enter to move forward. The button does appear highlighted, though.
This bug is annoying.
Fixed in commit r38455 as part of bug 7902.
Ran tests on Fedora36 and Ubuntu 22.04, using dev builds #2655 (missing bug correction) and #2657 (with bug correction).
The entry fields in tl-setup are behaving as expected prior to and after the bug correction.
Build #2655 presented entry fields that were not initially focused, and having typed something into the fields followed by pressing the RETURN key did not activate the Forward button.
Conversely, build #2657 presented entry fields which were focused with highlighted text if it was a reinstall using an earlier configuration. The RETURN key correctly connected to the Forward button with focus being on the entry field.
This bug is regarded as fixed.