Widgets won't accept edits once a save has already been made, or persist the new values

[SDScandrettKint]

Tested in 7.6.x.

String (rich-text and text) widget(s) won't allow an edit to be saved if an edit has previously been saved in the same session, as shown below. Refreshing the page gets it to work again.

string_edits.mp4

If the string widget(s) already have data in, then they are not affected

string_edits_with_string_data.mp4

[SDScandrettKint]

Unsure if related, but once a save has been made to another node (e.g. concept) and text is entered into the rich text or regular text widgets the values disappear once moving away and back to the card, but the data is persisted in the node preview on the left side

string_persisting_issue.mp4

[SDScandrettKint]

Updated again, as this isn't just affecting strings, it's affecting all of the datatypes after a save:

all_persisting_issues.mp4

The name of the issue has been corrected to reflect this.

Should a fix target 7.6.x, as this sounds like a regression or a semi-data loss issue?