Hello janfaracik, there are currently 4 open regressions caused by this change:
JENKINS-68097 Credential domain dropdown floats into text (regression in 2.340)
JENKINS-68103 Clicking build progress bar no longer jumps to console output (regression in 2.340)
JENKINS-68129 Dropdown chevrons no longer separate lists (regression in 2.340)
- JENKINS-68160 Context menu change causes weird behavior in build history (regression in 2.340)
I fear that these issues will cause disruption to users if delivered in an LTS release. You are in a strong position to be able to resolve these issues efficiently; would you be able to take a look at them?