I had something similar happen about 2.5 weeks ago, but I did return to target power.
After that incident I configured the Kickr to use “Control with ANT+ Power Meter” and turned power match off in TR which you can read about here: PowerMatch Experiences - #71 by bbarrera
That has generally worked better, however it is not foolproof. I start each workout by doing 30-60 seconds using the Wahoo app, to confirm the Kickr’s “power match” is working, and then swipe-quit the Wahoo app and start the TR app on my iPhone. I’ve completed 8 workouts using the Kickr version of power match, and 1 time the Kickr had not connected to Stages PM (step 2 in my instructions, linked above).