Rendering errors

[alexeyknyshev]

Screenshots from emscripten demo
1. No round corners:

2. Wrong background rect:

3.Something wrong with "Photoshop" theme:

4.Switching themes brings elements position error
Reproduce, select Window demo and switch from "Blendish" to "Turbo" theme:

Recreating window (select Window demo, which creates new kiui v0.1 titled window mostly eliminates error):

[alexeyknyshev]

Big lists makes scrollbar too small which producess "rect" with negative height
ok:

resizing to smaller window --> smaller scrollbar, baad:

Smaller, transforms into rect (due to negative height?)

:

[hugoam]

N°1, 2 and 5 are fixed in 7ad73ca.
N°3 is not a bug, the photoshop style is just an empty stub for now.
N°4 fixed in e9e8938.