CKEditor v4.1.2
CKFinder v2.3.1
I have an instance of CKEditor inside a wrapping div used to show/hide CKEditor as needed. The default CSS keeps the div hidden with display: none; and on the page load I determine if the div should be show with jQuery, and then use $(div).slideDown(500); to show the div. This adds a style="display: block;" to the div.
However, when I click on the maximise button, rather than appending the required code to the style, it replaces it with style="position: static; overflow: visible; z-index: 9995;". This leaves me with no visible CKEditor and a very weird looking page.
If I manually add back in "display: block;" to the style then I can see the full screen editor, and minimising the editor takes me back to the normal page, but the "display: block;" is still there, it only removes the appropriate code.
Bug filed - https://dev.ckeditor.com/ticket/10541
Whilst we wait for the bug to be fixed, is there any change I can make to the source code to fix this issue?

I am having the same issue.
.Whilst we wait for the bug to be fixed, is there any change plr I can make to the source code to fix this issue?
I am having the same issue. Didn't know it is a bug! I also have the same question as the OP: while we wait for the bug to get fixed, any temporary workaround would be greatly appreciated!