We have implemented many reports with toolstips feacture on matrix and column chartst and published to Power BI Service Premium. Whenever we did mouse over to that visual it responded immediately. Last couple of days, (not sure when this started) we are facing issues report page tooltip on service where as on desktop it works perfectly fine.
Example , one report move mouse over matrix visual and you do get an immediately response BUT the tooltip report disappears straight away. See example below. You need approx 3 times before tooltip report appears. This applies for all reports with tooltips.
Power BI Desk top version: Version: 2.65.5313.621 32-bit (desember 2018).
Example below you get an respons but disappear immediately.
Using Google Chrome/Internet Explorer with same results.
We have had identical issues, just started today, possibly yesterday. Desktop is fine, but Service is very tempramental, and very precise mouse movements are required. Untill very recently it was working perfectly.
I'm having the same issue where tooltip report pages that work fine in desktop only display on the service for a split-second before disappearing. Also happening with normal tooltips on a clustered line/bar chart.
I still think it`s solved 100%. Have I understood you correctly, that I need to hover my mouse over the line right and left to trigg the tooltip. I though the tooltip should work as Desktop e.g. reacting as soon you move your mouse over the line.