I've encountered a strange solidify issue which I have been unable to correct looking through forum suggestions etc. What is happening is that I am applying a solidify modifier to my model and it's creating these extra 'lips' or flat planes where I have set my edge crease
You'll see the topology is simple, nothing I would deem complex. Removing the edge crease in the model corrects the solidify, but does not create the sharp edges I require. This is for a function part and this 'peg' on top must slide into another part.
You can see from the below image, when I select display modifier in edit mode, the solidify is calculating something strange. The problem appears to be around the internal corner.
I have checked face orientation, merge by distance any anomalous vertices and ensured any scaling and transforms are applied. This is for 3D printing purposes, so I would preferably require consistent thickness on the model.
Any suggestions would be most welcome, as I've spent hours trying to determine the problem.