V5.4.0 prerelease - Several block-quote syntax blocks are slow

I’ve noticed that the <<< syntax for quotes is slowing tiddlers down considerably compared to entering the underlying HTML. Entering about a dozen quotes using this syntax and attempting to save the tiddler results in a delay upwards of 1 minute. The delay is not as bad with fewer quotes (6 or so), but even then, as body text is added between the quotes, this delay appears to worsen. The delay is also present when attempting to open tiddlers with this formatting.

I’m able to reproduce the slowness at this share site url. The test tiddler has 12 quote sections.

I suspect it is the parser rather than widget/rendering since I don’t see any slowness dynamically generating 50 quotes like this:

<$list filter="[range[50]]">

<<<
test
<<<
</$list>

would you be so kind as to test your actual content on this copy of the prerelease?

Thank you.

Related draft PR: Fixes an issue where blockquotes trigger parsing as macros by saqimtiaz · Pull Request #9695 · TiddlyWiki/TiddlyWiki5 · GitHub

Works great now, thanks!