I just want to check with the user community that what I see is indeed what ESRI think should be happening...
So following the instructions here I connect with an OLE connection to an Access database (accdb). I add the table to the map and then create an event theme from it, so far so good, as shown below.

Using the select tool I draw a selection box around 1 point on the map an I see this...

All points selected!
So I open the attribute table of the event layer and I see this...

Nothing is selected!
Am I right to conclude that an OLE connection does not work well with arcpro and that one cannot create sensible event themes from a table coming out of an accdb?