Prime on a loop inserting a radical

[salvomic]

I was trying to insert the radical \SQRT((t+i)/(-t+i))^i and Prime is gone on a loop without ending...
Also Emulator behaviors so: top right "clepsydra" (sand clock) working, and after several minutes a dialog box: "The application has crashed and will be restarted"...

With an expression like this first "Simplify" sent the calculator in crash also. The expression was c*t*e^((i/2)*ln((t+i)/(-t+i))), got applying "atrig2ln()" to the expression c*t*e^ATAN(t)... Hit "Simplify" on that expression also emulator (as Prime) hangs...

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\( \left(\sqrt{ \frac{t+i}{-t+i} }\right) ^{i} \) -> crash
atrig2ln(c*t*e^ATAN(t)) -> -> \( cte^{(\frac{i}{2})\log{ \frac{(-t+i)}{-t+i} }} \) -> Simplify crash also
***

Salvo