Unable to add most emojis and many other Unicode characters to add-on summary and description

[tdulcet]

Describe the problem and steps to reproduce it:

@rugk and I just submitted an emoji picker and autocorrection add-on to ATN: https://addons.thunderbird.net/en-US/thunderbird/addon/awesome-emoji-picker/. It deals with emojis, so we obviously wanted to include some emojis in our add-on summary and description. I tried using both the actual emojis (e.g. 😊) and the HTML entities (e.g. 😊).

What happened?

With most of the emojis I just get a spinning timer forever:

Looking in the browser developer tools, I can see this 500 error:

The only emoji that worked used a variation selector.

What did you expect to happen?

I expected all the emojis to be added. We want the summary and description to be similar to the AMO version of the add-on (https://addons.mozilla.org/en-US/firefox/addon/awesome-emoji-picker/), which has lots of example emojis.

Anything else we should know?

We also just submitted another add-on that does Unicode font conversion (https://addons.thunderbird.net/en-US/thunderbird/addon/unicodify-text-transformer/) and we were not able to show any examples of the Unicode fonts.

This could be related to mozilla/addons#5810.

[rugk]

As an additional information: I know it works on AMO and also has always worked there, as far as I can remember (some years).