Ok, after a couple of days using the forum on my aged pad, and my phone, there are really only two issues that I have problems with.
Both involve the double-tap zoom function; firstly, when I have the main list page open, I used to be able to double-tap to zoom the thread title out to make text easier to read, that’s no longer possible, so I’m now forced to wear reading glasses to enable me to find out what each thread is about.
The same applies to the reply text box, which I cannot now zoom out to fit the width of the page to enable me to read the text I’m typing in, even on my iPad, which is an annoyance.
It’s not just double-tap, the two-finger pinch function doesn’t work, either.
This is on the pad, which is restricted to iOS 9, on the phone, which is running the latest version of iOS 10 those functions appear to be working.
I’m not about to buy a new iPad to enable me to use the forum property, I’m waiting on a new range in March.