Sounds exactly like a graphics card driver rather than a C2 bug, so closing.
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eldods - please follow the bug report guidelines. If it is easy to reproduce, attach a .capx file reproducing the problem. I'd also recommend re-testing in r148 since we fixed some audio bugs already.
I don't think it's possible to simulate device performance at all. The CPU and rendering speed will always be whatever your desktop computer can do.
All we could really do is set the right window size and put a picture of the device around it. I guess that might be useful.
Closing, please follow the bug report guidelines.
Are you sure this is not a problem with the graphics driver on Ubuntu? Linux graphics drivers can be especially problematic, and if it works on all other systems, that would suggest Construct 2's code is correct.
Squirrely1 - please post a new report following all the guidelines, or your report will be ignored. This is a closed bug report from February.
Edge fringing or "bleeding" is a normal result in computer graphics when using floating point positioning or scaling, and is not at all specific to Construct 2. It's important to ensure your sprite sheet has at least one transparent pixel between characters to ensure that bleeding does not occur.
Which function are you trying to access it from? If you're in a closure or global function you'll need another way to get the runtime variable.
I think you can access it via this.runtime.versionstr.
WebStorage should work just fine.
I'm not sure I understand. Why would you want to fix the glitch when using integer scaling? Didn't you say it's fixed already that way?
Closing, please follow the bug report guidelines and include a .capx.
On Ubuntu, you just need to right-click the file, select Properties, and enable execute permission. You don't need anything else installed.
It looks like pixels from adjacent characters leaking through due to floating point scaling. Try using point sampling, pixel rounding and letterbox integer scale.
The power-of-two sizing isn't important for spritefonts.
See sounds & music in the manual, with particular regard for dual-encoding. IE10 needs .m4a files whereas most other browsers play .ogg.