Why is this astable multivibrator circuit getting balanced in a flash and not oscillating? It works on a breadboard. It once worked fine in simulation, but one day it stopped oscillating in simulation. Very weird. I am wondering what clamps both transistors at the same base voltage simultaneously.
I happened to have another circuit which oscillates on the left and I mimicked one circuit and it alone does not oscillate, for well-matched factor, I changed transistor to different NPNs or even tried replacing resistors with different values prior to both transistors and also the base voltages are stuck.