I have screwy stuff going on.
signals neutral brakes applied, I get steady left front and left rear signal lamps along with all three brake lights illuminated.

Left signal initiated, no brakes I get front and rear left side signals flashing and all three brake lights flashing.

Left signal activated and brake applied I get steady left front and left rear signals and all three brake lights steady. Release the brake pedal and both left signals and all three brake lights resume flashing.

I replaced all rear lamps and will be replacing the flasher once I can get to a dealer.

Any thoughts appreciated. Could a faulty multi switch cause issues where depressing the brakes stops the flashing of the left signals? Right signal lamps are not involved in these shenanigans at all.
Thanks, Jim