Preload image bug of HTML5 version with DPI != 1

[pozirk]

Just to provide some more details on the problem.
I have a fixed size of the game screen for HTML5 and a background image of the same size.
So, everything works fine, except when DPI is not 1, which happens a lot on Mac screens, I guess.
In this case, my game screen might be 200x200, instead of 100x100 and background image stay 100x100 and I have the problem as on a screenshot.

Doing var bmpd:BitmapData = new Back(WIDTH, HEIGHT); has no effect on the size of background image.

For not HTML5 version of the game I do the following:

back.width = WIDTH;
back.height = HEIGHT;

And it stretches the image as needed.
But!
This is NOT working for HTML5 since OpenFL 7, which I have a little comment somewhere in my code about.
I’ve “fixed” this long time ago (by not settings WIDTH and HIEGHT) and completely forgot and now the problem came back again.

Customize preloader html5 : different background image?

Sorry for the delay, on the latest development build, I was able to fix the preloader by removing back.width = w; and back.height = h from your preloader code. Initially on HTML5, BitmapData is not fully loaded, so the bitmapData.width and height are each zero. Setting bitmap.width and height applies a scale, which ends up creating trouble. Open to ideas if this can be handled better somehow. Otherwise, you should be able to Assets.loadBitmapData (with a non-embedded asset, perhaps of a differen…

TL;DR: The problem is setting WIDTH and HEIGHT for background image in Preloader is not working for HTML5 since OpenFL 7.