I found a solution for this bud, we need to install a service pack of aem and all will be work fine.The service pack is the following: AEM 6.4 Service Pack Release Notes I hope that this help.Thanks a lot.

i follow the suggested steps of the latest reply but i have the same issue in the page http://localhost:4502/editor.html/content/TestTouchRTE.html i see the buttons in full screen but when i click in close and i try to open fullscreen i didn´t see the plugins buttons.issue2.mp4 - Google Drive

Hi,Do you have any fix for this issue? I have the same bug in AEM 6.4https://forums.adobe.com/message/10918351#10918351

Do you know how can you fix this issue?Thanks.