9Patch not working properly with Letterbox scale

Link to .capx file (required!):

dropbox.com/s/3uvpme9qzixo3di/9patchbug.capx

Steps to reproduce:

1. Create a fancy 9Patch Object of your choice

2. Set Fullscreen in Browser to "Letterbox scale"

3. Run the project

Observed result:

There is one pixel space between the edge and the complete filling. The missing pixels seems to appear at the border of the image.

Expected result:

No space between the edge and the filling.

Browsers affected:

Chrome: yes

Firefox: yes

Internet Explorer: yes

Operating system & service pack:

Win 7 Professional SP 1

Construct 2 version:

r122 (but also tested with stable version 119)

Should be fixed in the next build, at least for the WebGL renderer. I can't figure out how to fix this with the canvas 2D renderer; it may not be possible since the drawing tools it provides are more basic, but I'll have another look tomorrow. Note Chrome is seamless with the canvas 2D renderer set to use stretch edges instead of tile.