Well... it worked fine on my live server.. and it was getting time to re-install my Windows OS anyway as it was getting pretty messy after 18 months of trying out god-knows what software and tweaks I could find... Now I have a squeaky clean computer again.
It seems to be working again now.
I see what you mean by the zoom, but I usually only work at 100%... so I doubt that was it.
And the rules for the example in screenshot were to show a different column (that summerised two other columns with some hmtl formatting) for when the screen got too small (the other 2 columns would be then become hidden)...so not reversed. But thanks.
I'm still not sure what's best... just do a completely different query for small screens, or use the responsiveness in a single query... because I found when using 2 separate queries and then show/hide depending on the screen size (via the VP/panel responsiveness settings) would cause a problem if the screen was changed whilst there was a popup showing (one which shows details of query selection, for eg.)... the vp would hide the original query, and the popup (as expected I guess), and then show the other panel/s ... but then when sized back to before.. would still be showing the popup from earlier.
Thanks.
G