yes, it won't come forward. And as I've mentioned before they really, really need to be combined, and preferably merged with the IDE. Right now I have 7 b4a projects open.
Sorry I guess I wasn't too clear. The abstract designer is "open", however the menu link doesn't bring it forward so I have to hunt through all my open projects to find it.
UPDATE: Here's how I think you can reproduce the behavior:
1. Open b4a, preferably a couple instances
2. click "Designer" in menu bar. designer and abstract designer should both pop up
3. switch to the other b4a instance, or another program
4. use window's task manager (i.e. task bar) to go to "designer" window of first project
5. click "tools-show abstract designer"
6. BINGO