We know that in the version 5.1.x of plone the subtitles of images is not available in TinyMCE.
My team and I have set ourselves the goal of solving this problem with the intention of releasing a new version of plone 5.1.x
We do not see as a possible option to move to plone 5.2.2 which is the version that enables this functionality again.
Solutions that DIazo intervenes are discarded.
We will take this as the baseline: https://github.com/plone/mockup/pull/911
We know that the solution involves 3 libraries
The first problem we see is how to do this update for static resources because in the version we have (5.1.x) this does not exist.
From there we can go forward.
Any help / suggestion is welcome.
We have to do this before this version is out of support.
Plone 5.1.6 (5116)