A server-crashing exploit

Ideas
1

I wrote the expression

10x^2 -10x

then I selected all and clicked the sqrt icon and the server crashed
I tried it with some more and I got that:

nx^2

or

x^2 -n

if you selected all and clicked any Icon the server will crash Immediately

2

I can’t reproduce the issue on Wolfram Alpha. Can you elaborate more?

3

here is a video