Agree totally about fixing this issue, it affects all web browsers on IOS 15.7
This 'worked' on IOS 15.6.1 so saying 16 fixed a bug is not correct, 15.7 broke BMP images in browsers.
Just click the link from above:
http://ww3.tiki.ne.jp/~k_nakada/material.html
You will see the thumbnails, which are GIF's but clicking a thumbnail links to a BMP so all you get is a white screen with a small black box at the top of it.
I have devices, that for many technical reasons, stream multi-part BMP's and they are all blank screens now.
The devices all do still BMP's, all blank now as in the example from above.