OS: Windows 10
Opera gx: dont know ( downloaded it like a week ago)

Steps:

1. in above bar type something to search
2. when page loads edit url and replace ?client=opera-gx with something other then opera or opera-gx
3. hit enter

it enters loop replacing ?client field with opera it fails to do something and does it again thus sending more requests to google and i get "ERR_TOO_MANY_REDIRECTS"

note it dosnt work if u click on link, you have to press enter in url bar. i posted on it on reddit and someone said it does that in regular opera too

just btw where do i find info about version, i tryed looking in settings but i dont know if i am blind or i didnt see it there. if so where is it?

what happens, when i modify url for client value for google it does not replace it correctly and it looks like i spam google so it requests me to do recaptcha.

what i think happens: something try's to replace client but instead of replacing it with opera-gx it replaces it with opera and since its invalid it repeats that cycle, thus creating this abomination:

https://www.google.com/search?client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=opera&client=meme&q=test&sourceid=opera&ie=UTF-8&oe=UTF-8

you can test it out by clicking this:
https://www.google.com/search?client="not correct client"&q=this+is+an+example&sourceid=opera&ie=UTF-8&oe=UTF-8

im unsure if it was reported and fixed but i decided to post it!