Earlier quoted context omitted.
are you trolling? type it into the search bar and it does crash
They're not trolling. I typed it into the search bar. Safari didn't crash. Is the person who wrote the tweet trolling? Probably not either. But what type of iOS device do they have? Which version of iOS are they running? Which language and locale? Those things matter. Other things that apparently shouldn't matter might matter as well: other apps installed or running, notification configuration, how many tabs they hav…
I'm sorry to to be the one to break this to you -- you have only worked with bad engineers.
If you get a bug report like this, where some simple user action like typing three characters is causing client devices to crash, you better be more mad at your busted ass system than a sparse bug report.