Describe the problem

Since some weeks I dont have any tooltips on mail icon. Before I could have seen i I got mail from AH for example

What steps will reproduce the problem?

1. Constant

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What version of the addon are you using? (Stating 'latest' is not useful)

11.0.10.

Do you have an error log of what happened?

no

Any additional information? (example: WoW language if not English)

Hmm. There was something around button handle. I clicked on lock buttons, then the tooltip worked.