Hi folks. There is a patch to be tested over in the bug tracker for WordPress here: https://core.trac.wordpress.org/ticket/36534#comment:10
If you want to test and report findings back, that would be good. It would be a whole lot better than blind conjecture, here, to have the core fixed properly.
Another reminder, if this is a bug in WordPress (which I am fairly certain it is), please add your evidence to the bug report at https://core.trac.wordpress.org/ticket/36534 so that it will be appropriately addressed.
Hey all, If you truly feel this is a bug, as I clearly do, please add your evidence/test results of your issues at the bug report here: https://core.trac.wordpress.org/ticket/36534 . You can use your WordPress.Org login credentials to login there, too.
Cheers,
Jay