On 6 Feb 2021, at 19:05, feek via TextMate wrote:

Could you check the following (using option key pressed):
TextMate > Check for Test Builds
does it shows: https://feek.d.pr/XRWRN5/EagdaJ4Lnp
mentioning that 2.0.16 is the latest build and asking for downgrading to 2.0.16?

The problem is that if you upgraded succesfully to 2.0.16, then it will not report 2.0.17 as an update, since nothing changed (just linker option to allow running on macOS 10.14 and earlier).

But since 2.0.16 was a prerelease, TextMate thinks that you are running a prerelease, and thus shows the dialog.

I just updated status of 2.0.16 to be a proper release, so now the dialog will not show the downgrade option, though it will still not report 2.0.17 as latest version.

It probably should report 2.0.17 as an update when manually checking, but the logic to hide 2.0.17 for users on 2.0.16 is server side, where it does not know if it was a manual or automatic software update check.