Regarding those bugtracker issues: Which bugtracker did you use? We have switched to Github for the main bug tracker. https://github.com/SuperTux/supertux
Regarding your level: Very decent and nicely done! :-) I especially like how you used more recent features and tiles, like the air hat or that rather recent lattice. :-)
If you want to create more levels and have your own worldmap, that would be great. If not, I could include it into our Incubator island for the time being! :-) Tell me what you think.
Please use the new one. There are all kind of issues with the old one. Github is much easier to handle. Of course the old one is still used for the already filed bugs.
Welcome to the forum the level was very enjoyable , The difficulty was fair too , The amount and placement of unstable tiles was really good in my opinion. Its a Very fun level!