# Circuit composer RX or RY gate disappears

When I specify the RX or RY gate to rotate by say $$\pi/4$$ in the circuit composer, the gate disappears off the circuit. Is there any reason why if I leave it with $$\pi/2$$ default then it stays?

If I edit theta the gate disappears.

Here's some screenshots to show what happens:

Ok solution is to erase the whole field $$\pi/2$$ and reenter $$\pi/4$$ but leaving $$\pi/$$ and then denominator $$4$$ will not work. Also the denominator is bounded between 1 and 9.

• I am not seeing this with mine... can you attached a picture of what you are seeing? Dec 17 '20 at 0:44
• That is interesting because I definitely don't see that with mine. Dec 18 '20 at 4:19
• I think it is a bug within the IBM Quantum Experience Circuit Composer. Because if you change the parameters using the Code Editor then the gates do not disappeared. Dec 20 '20 at 3:47