some fast solve:
tv for migx type: migxtinymce
and edit file: core/components/migx/elements/tv/tinymce.tpl
add class "modx-richtext" to textarea
add after: field.onLoad = function(){
TinyMCERTE.loadForTVs();
next:
tinyMCE.getInstanceById('{/literal}tv{$tv->id}{literal}').save();
to:
tinyMCE.get('{/literal}tv{$tv->id}{literal}').save();
not sure what is right, but it works
discuss.answer
Thanks!
https://github.com/Bruno17/MIGX/commit/bbbd84614c61aa662fc302ae267b5b02d7226e91
with this, you can leave the inputTVtype 'richtext'
will be in the next version