In the just released Lr Mobile IOS 5.2.5 the Show/Hide Filmstrip Button is over the filmstrip in Keyword mode. When the Filmstrip is displayed the last photo in the filmstrip is hard to select as the Show/Hide Filmstrip Button is on top of the thumbnail. It should be outside the filmstrip.
2018 iPad Pro 11 inch and also my old 10.5 inch iPad I see it in the Edit, Comments, Keywording, and Information mode. I is also see it in 5.2.4. There is plenty of room. It should be moved off the filmstrip.
I guess I don't see the issue, Robert. When I move to the last item in the film strip, it falls on black space - so no problem. I have no issue tapping either the image or the show/hide icon. If I did, I could slide the strip over one image.
I agree you can move to the end of the filmstrip and it is blank and you can also select both the icon and thumbnail. Its probably easy on a 12 inch iPad and probably difficult on an iPad mini. It should be considered either a bug or a really poor design that needs fixed. There is plenty of room to move it to a more logical place.