Last year, I purchased a ‘Jordan’ Japanese Maple from a local nursery. The tree did great all year (in fact it did better than all of my maples). However, last fall I noticed a weird growth or callousing of its trunk and branches. I was hoping that someone could help me identify the issue. Attached are several pictures of this growth (or what appears to be a growth). The affected areas have some spots that are flakey - when rubbed, it just shows more of the whitish/tan color, but a tad darker. Other than this, the tree appears to be very healthy and has already started to leaf out. I don’t see any holes or sawdust from worms or borers, but some of the markings look like a trail. It also doesn’t appear to be lichen or scales. Any help would be greatly appreciated!