Is it the red PTT LED inside the RigPi or the PTT button on a browser on your phone or the PTT button on the browser on the RIgPi itself?
I do not use the RigPi Web interface directly from the RIgPi and in fact close all browsers on the RigPi itself.
There is an interaction anomaly that will be fixed in the next revision of RIgPi software.
73 - Mark - K8MHW
'A RigPi Enthusiast!' - I am not otherwise affiliated with MFJ or RigPi