Hi,
To tell you the thruth the tube design view has never been tested in IE old versions...
I would be happy if you could send your fixes (make a fork on bitbucket and make a pull request) to the css and widgets.
For the javascript, it would take too much work to fix it for old IE versions, and the usage of those is meant to be dropped very low in the next few years, so I doubt it will be a good time invest for me (and I guess it will be the same for the others devs of the team) to work on it.
If you have a need for it, go ahead, we will happily accept your fixes :).
Just some pointers for old IE versions :
- Dictionnaries-like object creation finishing with commas (ex: "{foo: bar, bih: buh, }") doesn't work
- Same for lists
- Recursive links on objects (objects having an attribute of another that has it too) works badly and cause memory leaks in IE6/7.
I don't know if those are the problems here, but it may :)
Good luck,
Jonathan