I've only ever done buttonholes (automatic) on Janome machines and not many for a long time until this year and to be honest they were okay on the fabric I was using, but have just read a post on Instagram from @good_fabric_store and wondered if anyone else has done similar things.
They say that the first buttonhole is fine, ie on a scrap of same fabric, then the 2nd one, ie first on garment is a mess. Remedies include switching back to a straight stitch and sewing on a scrap then going back to buttonholes and someone else has said switching off the power and back between each buttonhole has a similar effect.
The opening poster says hers is a basic model but the switching off of the power suggests to me that it's a computerised model as the memory will have been erased by doing that.
One person says they bought a new machine (Pfaff) and they are so much better.
Not saying I'd go to that extreme but thought it interesting.
Has anyone else had similar issues?