Easy Way to Fix Window

I have problem with window in my bathroom. I am not sure is it problem with man who instaled it and did not set angle as well, or window wasn't made as well. Angle mistake is very small, but when I open it wide, window close itself to the half.

You can see on the photos in what position window stay when it is opened. That freaking me out every day. Also in place where I live is very windy all over the year, and sometimes when I open the door of my bathroom wind slap window very hard.

I find out that easiest way to fix it is to use small magnets. I measured point where window touch wall when its opened and mark it. Magnets are black so I put it on the wall beacuse of estetic. I wix it to the wall with some electric tape to stay in position until universal glue is dry. On the window i put small metal on the place where it will touch magnet. I fix it with elecrtic tape and glue, the same way I did with magnets.

When glue is completley dry, remove electric tape and its all done. When I open window it stay in wide opened position even when it's windy outside.
P.S. I am not sure what glue is best but this universal glue worked just fine.

PLEASE VOTE FOR MY PROJECT. THANK YOU! :)