When using the shader bumpmap on a Sprite with a normal map, the position of the light is correct, however on a TiledBackground it seems to be flipped upside down on Y and the X position is randomish.
Description of Capx
Bumpmap shader on a Sprite and on a TiledBackground (2 situations)
Steps to Reproduce Bug
Run the capx, test with mouse the left and right bumpmap shaders
On the left, the bumpmap shader with a Sprite, everything is working correctly (the light is at mouse position)
On the left, the bumpmap shader with a TiledBackground, light position is messed up
On the left and on the right same result
Operating System and Service Pack
Windows 8.1 x64
Construct 2 Version ID
Steam r192 (x64)
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It does look like the same issue as the possible duplicate, but this looks like a better example .capx, so I closed the other issue and will leave this one open.