Thanks for the report, this is definitely a weird one. I’ve created a PR with a fix for this issue here: https://github.com/thunder-app/thunder/pull/1572!

For some additional context: Thunder automatically performs encoding on URLs. However, in this specific scenario, the URL was partially encoded (the brackets were encoded, but the non-ASCII characters were left behind). This partial encoding caused Thunder to incorrectly encode the already encoded brackets (%28 and %29)

It works fine if you replace all the non-ASCII characters. Still a bug, but knowing this may help find a way to fix it.

![](https://upload.wikimedia.org/wikipedia/commons/4/44/Tra%C5%A5_u_osady_Luh_%28u_Bezpr%C3%A1v%C3%AD%29_1.jpg)