Just noticed a few days ago that the US and Australian flags look different (a bit stretched). None of the other countries flags seem to be affected so far. Any reason for this?

Discussion for new flags:
https://imcdb.opencommunity.be/forum_topic-9524-82829-Libyan_flag_change_needed.html
I replaced the old set by a set extracted from Wikipedia, with more real flags.

The reason why some look wider is because in reality not all flags have the same ratio.
e.g. USA and Australia indeed are wider,
10:19 for USA https://en.wikipedia.org/wiki/Flag_of_the_United_States
1:2 for Australia https://en.wikipedia.org/wiki/Flag_of_Australia
By comparison, Switzerland has a square flag:
https://en.wikipedia.org/wiki/Flag_of_Switzerland

I don't like the way they look now. Can't go back to the old ones?

Cf that other thread.
The problem is that the other set is not updated (unlike those taken from Wikipedia).
If someone makes the missing ones with the style of the old ones each time we need new flags, we can switch back to these.
But I don't really have time for drawing all these, hence why I chose the fastest solution (and also because I kinda prefer the solution that respect flags ratio, but I can live without that, as indeed the colors were better on the old ones)