Multiple clients have reported in parallel that after their web browsers were updated over the past week or so Magnolia page editing functionality was lost.

Such users are on Windows and on latest Firefox 52 and Chrome 57 and using Magnolia 5.3.5 or 5.4.7 pro STK (and 5.5.2 demoauthor as mentioned below).

They cannot see the action bar (as per screenshots below). For others, they could see the action bar but could not select actual page areas/components to edit.

We performed such tests on clean bundles of 5.3.5 and 5.4.7 pro STK which are the two standard versions we implement/support with our clients.

Unfortunately even testing on Magnolia's demo author (currently on 5.5.2) it doesn't work (https://demoauthor.magnolia-cms.com) - on one browser it doesn't load the action bar, on the other it loads it but you cannot edit page areas.

Investigation and possible solution:
The issue had been originally reported on Windows (with touch support) but can be reproduced on any hybrid device supporting both touch screen and mouse support. It has manifested on latest chrome and FF probably due to the fact that since their latest release those browsers support Touch Events API automatically, whereas in prior releases it was disabled by default.

The issue can actually be reproduced (simulated) e.g. on a MacBook Pro by

• chrome: opening a tab chrome://flags and enabling Touch Events API
• FF: opening a tab about:config and setting dom.w3c_touch_events.enabled=1 (0=automatic, 2=disabled)

The solution consists in enabling mouse selection listener even when touch support is enabled cause that is the case for hybrid devices.