Since the April update we are unable to switch off tooltips on table matrix visuals where there is an attribute in the visual used for a drillthrough.
See here for futher details. Re: Tooltips styles changed after April 2023 upgra... - Microsoft Power BI Community
Your problem is occurring on Report Service, so I would need to move your question to the appropriate forum. Report Service has a dedicated forum to handle questions.
Best Regards,Community Support Team _ Ailsa Tao
OK thanks for coming back to me. Do you move it or do I need to?
Find out more about the May 2023 update.
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