Two discussion queries with different terms when the term contains a colon

[ouuan]

Reproduction repo: https://github.com/ouuan/giscus-colon-bug-reproduction

The term is FOO: bar 🤔.

It sometimes sends two discussion queries with different terms:

https://giscus.app/api/discussions?repo=ouuan%2Fgiscus-colon-bug-reproduction&term=foo%3A+bar+%25F0%259F%25A4%2594&category=giscus&number=0&strict=false&first=15
https://giscus.app/api/discussions?repo=ouuan%2Fgiscus-colon-bug-reproduction&term=FOO%3A+bar+%F0%9F%A4%94&category=giscus&number=0&strict=false&first=15

The first request changes letters before the colon to lowercase and double-URI-encodes the part after the colon.

I also observed the following:

• The first request is always sent. The second request is only sometimes sent. The second request is more likely to be sent if the network cache is disabled (or using a forced refresh), or the user is not logged in. It's also more likely in Chrome than in Firefox on my machine.
• It does not happen if the script is used instead of the component. (Given that it does not always happen, I'm not sure.)
• Whenever the second request is sent, there is also a request for https://giscus.app/_next/data/juf5uGDEc0gFUN83cwLIn/en/widget.json

It may result in different discussions seen by different users, which actually happens in my blog: ouuan/iles-blog#15 & ouuan/iles-blog#136

[ouuan]

It also results in incorrect discussion titles. I almost forgot this, and didn't investigate it at that time:

[ouuan]

I've confirmed that this is still reproducible. Any look into this or at least an acknowledgment?