All core entities except File implement a createAccess() override. As the default return value of Entity::access is TRUE, this leads to the problem that the value for File is always TRUE - ignoring "create files" permission.
Our assumption is currently, that not creating that override when adding entity_access in #3011 was an oversight.
I'm not sure if this is a bug or a feature request. Feedback is welcome.
Also related: #4975 - TRUE is a dangerous default value, anyway.
Recent comments
I adjusted the subject slightly.
CKEditor Inline Images not saved as Permanent in Term descriptions
It looks like it's a known issue with a PR. You might want to test this PR and respond in the issue itself.
CKEditor Inline Images not saved as Permanent in Term descriptions
Actually, that caused me to look a bit closer. This is in description fields on taxonomy terms. It looks like it doesn't do that on standard nodes. I am building a "catalog" (although it...
CKEditor Inline Images not saved as Permanent in Term descriptions