It appears that if the text @keymanapp-test-bot skip is found anywhere in any comment in the PR, then the checks 'pass', although the labels show the actual state correctly.
I removed the @ from two comments (1, 2) in keymanapp/keyman#11172 and then status of checks was shown correctly.
playground repro: https://github.com/keymanapp/keymanapp-test-bot-playground/pull/14#issuecomment-2052094256
Production repro: https://github.com/keymanapp/keyman/pull/11172#issuecomment-2051712152
Repro steps:
@keymanapp-test-bot skip
unclear if an intermediate half-baked test suite in the description (in addition to the comment) is needed.