Just trying out 1.2.1 and have an issue with science experiments and action groups.
Create a vessel with science experiments
Assign experiments to run on an action group
Launch
Trigger the action group - all experiments run as expected
Reset all experiments from the results dialogs
Trigger action group again - only some experiments run, others do not.
Now this is a modded install (MJ, MM, KAC and a few others) - and I've not seen updates for them yet. Is it a general problem, or something broken by mods?
Seems to be the 'simple' experiments - temperature, pressure, gravity, etc that fail - mystery goo, science jr and crew reports do repeat as expected. Also, I can still manually click on each experiment run it from it's menu, it's only the action group that's failing.