TST upgrades its version when the browser is running.
TST-Lock no longer displays locked tabs.
Workaround: Disable\enable TST-Lock OR restart browser.
Observations:
Trying to reproduce in Sandbox ... could not do it. Every upgrade worked fine.
Guess is that either TST is not sending some notification OR TST-Lock needs to monitor for a broken promise from TST to then try to re-initiate communications.
Scenario:
Observations:
Successful upgrade: