Odd Shadow Recovery - Straighten interaction
Gimp: 2.10.6 OS: Xubuntu 18.04
On a fresh image, using the new Measure -> Straighten tool appears to work fine.
On a fresh image, the Shadow Recovery Script-Fu with "Flatten image" checked also works as expected.
However, after running Shadow Recovery, if the Straighten tool is then used, it always leaves a Floating Selection (Transformation) layer that must be manually anchored. This weird bug also seems to place a load on the system that retards subsequent operations, even if the layer has been manually anchored.