Element-web: Escaping issue with (<50 character sequence (should render as text but instead it drops the rest of the message)

[freelock]

Description

Escaping issue with the sequence (<50 :

Steps to reproduce

This is a message that came through the Slack bridge, but it renders fine in Element Android -- it's just broken on Element web. You can see from the screenshot that no text is rendered after the "(" character -- the rest of the message is dropped, even though it is in the message source.

[t3chguy]

The escaping issue is in the slack bridge. That's not valid HTML.

[dbkr]

Yeah, we could switch to more of a tag-soup parser that will try & make sense of whatever nonsense you throw at it, but I don't think it would exactly be a priority and there's a certain argument to failing more obviously so we notice when bridges are misbehaving like this.

[dbkr]

Another option would be to ignore the formatted body completely if it's invalid HTML and use the plain body.