We have fixed the problem where when editing a post it was no longer loading the editor in the viewport properly. This was a problem unique to webkit browsers – i.e., Chrome and Safari.
I was able to replicate the editor window ‘jumping’ prior to this fix. After this fix it might not do it. I say ‘might not’ as I do now see one of the causes of this ‘jumping’ and once again it does seem to be a unique Safari thing. If I load a post for editing – especially from a topic with a lot of posts on the page – and I start to try and select text before the page has actually finished loading, then it is liable to jump.
This is caused by the fact that Safari will often load images on the page late without initially making space for them. The text and the editor will all be loaded and looking ready – but above that, images are still being loaded, which lengthens the page as content is pushed down to house them, causing a visual jump of the editor. Waiting for the page to finish loading before using the editor allows for a smooth selection.
This may or may not be the reason for the jumping now – if you will both try that it would be interesting to know. And Safari – despite what Apple claim – is not a particularly fast browser. It tends to look fast because of this late loading – and that tends to be fine when reading content from the top of the page – but if you actually watch the address bar and wait for the ‘X’ to turn back to the reload icon – the page takes longer to actually finish loading than it at first seems.
On the issue of Safari and my own feelings about it – then it is my experience after spending years offering support to people, that the vast majority of Safari users turn on their Mac where Safari is ready to use and never give a thought to looking at alternatives – which is the same situation that the majority of Windows users experienced with old and awful versions of IE. Or – they are just die-hard Apple people who would never consider anything else. This does not make it a good browser. Nor does it make it properly standards compliant. And as at February 2016, only 4.77% of people accessing the internet with a desktop machine used Safari. Which means the vast majority use a better browser with over 75% on Chrome or Firefox.
As an evangelist for the Mac and OSX I would love to be able to say that Safari is a great browser but I am not blind to the fact that Apple get some things wrong. Safari is currently one of them. And – while Safari bashing 🙂 let me just say that my biggest headache with my iPad and iPhone is that I can NOT choose an alternate default browser for all of those internal links!