The image upload and hyperlink tools in the markdown toolbar don't seem to be uploading images/posting link markdown until something is entered into the text editor.
The failure for the image uploader provides an error in the console:
wmd.en.js?v=ad7be89b32b9:1 Uncaught Error: Markdown renderer is not initialized
Error provided by rene in the Tavern.
There's no front-facing error message, the upload succeeds, but the markdown generation fails entirely.
Performing this using the hyperlink tool tries to post the question, and tells the user that text is required before posting, and the question review process errors out (which is correct behavior if I was actually trying to post the question,) here's a .gif of me performing this.
Once text is entered manually (even if it is subsequently deleted) the image upload and hyperlink tools work again.
This appears to be related to the CommonMark migration that's recently started, as it occurs on Movies&TV, which has recently migrated to CommonMark. It works perfectly fine on Stack Overflow, which has yet to migrate to CommonMark.
Could this be fixed?