Cannot pin text box tile to dashboard

PBI Desktop October 2021 release.

Microsoft Edge Version 95.0.1020.53 (also tried Chrome with same result but keeping it all in the MS space for simplicity here).

I created a test report in PBI Desktop with a manual data table (Enter Data) with a date - 16/11/2021

I created a text box with plain text in it.

I then created another text box with some text and the dynamix value 'last date in table'. This correctly pulls back the date value.

Lastly I upload it to the PBI service.

When I hover over or click on either text box I cannot see the 'pin' icon.

In the PBI Service if I then 'Edit' the report I see the pin icon.

I click on the plain text box, click the pin icon and get the pin to dashboard pop-up to select or create a new dashboard.

I click on the text box that contains the dynamic value, click the pin icon, and get nothing. The Pin to Dashboard pop-up does not come up.

I'd happily chare my PBIX but looks like this board doesn't allow that. Hopefully my explanation is simple enough for someone to easily reproduce and/or understand.

Any ideas about this?  Thanks.