had same problem here,probably with a very similar device.solved it using a Texas Instruments TLC25M2ACP without any other modifications.I have a circuit that works correctly with either an LM358 or a TL072 of which I am sure neither is original. Although on both the pin assignments are the same as the original LM358 and TL072, electrically they exhibit the same behavior as an LM324.
Amen, brother Ian.No idea. I don't buy dodgy components. I just use proper distributors.
TLC25M2ACP works like a charm and I have also been able to get it working with MCP602 by adding a resistor.probably with a very similar device.solved it using a Texas Instruments TLC25M2ACP without any other modifications.