Another issue about RTE component which inherit core/wcm/components/text/v2/text. and I added cq:dialog configuration for it.
When editing content in RTE, I added a table in it, and contents display in table cells horizontal. After I save the dialog, and open the dialog again, contents in table display in vertical ! please see below snapshot.
This issue only occurs in Chrome, it works fine in Edge.
Most likely, there is a css conflict between your code/parent container and OOB v2/text. Could you debug or engage a frontend developer to debug? It should be something related to 'width' or 'max-width' property.
open the developer toolbar in chrome via F12 key and inspect that table element's DOM and check the Style tab to find more clues.