It's not yet clear the problem is actually with Construct. It could be with the browser, the OS, the graphics driver, or something else entirely, or something working as designed - or, as is very common, it's just a mistake in the project or misunderstanding. One of the things the bug report guidelines aim to establish is that there really is a problem with Construct. We co-operate with anyone who files issues following the guidelines, and regularly even make a best effort attempt to deal with issues that aren't directly to do with Construct, but if the user does not match the co-operation then there is little we can do.