Clutch problem Mazda Miata

I drive a 93 Mazda Miata. Recently if I’m holding down the clutch for several seconds, it disengages and causes me to stall. When I pump the clutch while the car is off, the problem goes away until the next time it’s held down for several seconds. Does anyone know what’s going on?

The clutch master cylinder is leaking internally, causing the clutch to engage.

Tester

Thank you! That just saved me a few hundred.