iOs 17.5 fixes this issue! I really suggest to update to iOs 17.5 if you want to solve this issue.
I have been following this thread since the release of iOs 17.4 when bug started. iOs 17.4.1 did not solve the issue. But iOs 17.5 does!!
not-so-fun fact: I even contacted Apple Support twice in the past months asking if they were aware of the problem. They stated that it was working as designed..
Tonight my eyes watered when I tested Siri shortcuts with iOs 17.5 because they performed correctly! Finally, it executes again any shortcut even:
- when phone is locked*
- when shortcut contains more than one action
- when shortcut contains actions to third party apps**
- without the 'Dismiss Siri and continue' action!
*check that you allowed to run shortcut when iphone is locked in Shortcut > Privacy
**I am using a switchbot controlling curtains, amplifier and projector. They all now work again without having to unlock phone and click 'ok' for every action which is reeeaaally good!!!
Thanks to everyone that reported this issue!