Interestingly we had been raising the budget on a P-Max campaign a few times a month, no issues. At the beginning of February, we lowered the budget by around 7% noting that we were only spending about half the budget due to tROAS limitations. We wanted to remove the extra cap room a bit at a time to avoid potential future issues.
Spending all but stopped and took 5 days to recover. Google support said the campaign went into learning due to a major budget change, 7% is a major budget change? Why would it go into learning with so much unused cap space… just doesn’t make any sense.
We hadn’t made any other changes to that campaign at that time or for a week prior.
I don’t think this is a penalty but the client sure wasn’t happy about Google’s explanation.