Timer1 hangs delay() function.

[divinofire]

I am using an arduino nano
When I use timer1 library, the delay() function belonging to timer 0 hangs the entire code execution.

[PaulStoffregen]

Maybe you're calling delay() inside an interrupt function? Just a blind guess, since I can't see your code.

If you believe the TimerOne library has a bug, you must show a complete program to clearly reproduce the problem. No investigation will happen without a program which can be copied into Arduino and run on a similar board to recreate the problem.