Thank you Charles. I have googled and don’t think it is big bud. I have one older and one younger bush and the younger is the one with the new leaf problem. But it is fruiting ok. I plan to dig the bush up and check the roots later on, maybe vine weevil grubs have been at play. I get them on the strawberries (mostly in pots) and I’ve given up on the organic control -just too expensive. The pesky adults just wander back in from other gardens in any case. I just squash grubs and adults on sight and have the occasional search at night to deal with these very annoying critters. Will let you know.