Report Filter "Require single selection" not working

You are right. It simply does not work, nothing to do with edit mode or read mode.

Edit mode is just a mode to change your report, read mode, as it says, just to display the report.

The "require single selection" on a report filter indeed only works in the Power BI Desktop Version, not in the webservice version.

This is a serious omission and needs to be fixed as the margin for error, by accidentally selecting multiple filter values is high and gives wrong report results.

I read in an earlier forum message that this was done "by design" because allowing one selection only would prove risky as to other report tab results which might lack data if only filtered on one value.

This is total nonsense of course, it's simply a bug and needs to be fixed.

Again, previous user claiming that it does work in Desktop version, yes, that is true, but in order to publish a report one uses the webservice in most cases and there it simply doesn't work.

Also, if this was by design, why show "Require single selection" button in the webservice if it's unusable.

Come on, just fix it, and whether the rest of my data on other tabs is still correct then, is my responsibility to create a correctly linked report and not something for the software to decide for me.