Windows 8.1 on two computers, graphics cards: nvidia gt210 and nvidia gt660
Searched everywhere for a similar bug, but didn't find anyone that refers to UV vertex pinning due to Correct UV's option.
Broken: 2.76 x64 48f7dd6 (installed)
Broken: 2.75 x64 (zip)
Worked: 2.73 x64 (zip)
Sliding an edge loop and after that activating Correct UVs will randomly cause some of the selected loop's UV vertex to be pinned in the UV Image Editor (as if you had selected them and pressed 'P').
To reproduce (most of the times):
-create a cube
-mark seams and open the cube's UV map
-Ctrl+'R' to create an edge loop on the cube, right click to confirm and cancel the auto slide
-With the loop still selected, Double 'G' to slide the loop, left click to confirm the slide where it is (I managed to reproduce both moving and not moving the edge)
-With the loop still selected, Click on Correct UV's
-On the UV Image Editor, some random vertices of the selected loop will be pinned
-Sometimes if no vertices were pinned after that, using edge slide a second time will make all the loop vertices be then pinned.
Is this a feature (an inconsistent one) that I'm unaware of, or is it indeed a bug?