What kind of data source did you use in your report? Is this issue in all report or specific report?
Here I have a test by Chrome browser, it works well in my side.
For reference: Supported browsers for Power BI
Please update your desktop to the latest version and try again.
Here is the offical blog about sync slicer and I hope it could help you.
For reference: Sync and use slicers on other pages
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.