My comment was specific to the help file in chat.
In other areas I find the best way to click on the dropdown after typing start of username is to click on the avatar or space where the avatar would be, otherwise it might not take.
If I get annoyed and double click and the first click takes the second one in several cases hits 'bold' on the format bar causing a useless [ B] [ /B] (spaces inserted so it would show).
It was like this in testing, I just took it as par for the course not wanting to get further involved in clicking, double clicking, hovering, tapping, and double tapping.
You can't change the resolution on iPads. I was wondering whether resolution could be the clue to solving why Mark cannot repeat the problem that some members have.
It would be interesting to hear of other members experiences.
For details of the problem see
https://forum.alzheimers.org.uk/threads/faqs.104329/page-10#post-1457259 et seq