Pop up clutch issues

[Katfish]

Having problems with the clutch, every time I put the bike into gear with clutch lever pulled in, it lunges forward and stalls. I’m guessing it will be the push rod on the hydraulic clutch sticking with the bike been stood for a long time. However just wanted to gauge opinions. I have recently changed the oil, used a semi synthetic when previously I’ve always used mineral oil. Could this be the cause?

[Smallkat]

Is it only the first time, or can't you get going at all?

[Katfish]

All sorted, changed back to mineral oil and it cured it. Fresh clutch fluid just in case and I’ve popped it round to Genspeed as it’s only around the corner, just for a check over.