Created attachment 100046 [details] testcase This is the test case I said I would post. Instructions in my original bug posting, or on the testcase page itself. Hope this works--er, doesn't work. : ).
Resizing the window makes the red box display at the correct position. --> Layout
There's also a problem on our website at http://www.ebuconnect.de 1. Click on "Produkte" 2. Clock on "Elektronischer Geschäftsverkehr" 3. The submenu doesn't appear because the 2nd menu won't move down, instead the text will be written over the 2nd menu item 4. Resize the window, the menu appears 5. Click on "Management Info" 6. Then "Geschäftsprozessmodelle" 7. The menu here works perfect (same code)
If you resize the window, the browser reflows. Try it: using the testcase, click the red div, see the gap, then resize the window. This bug became in 1.3a. I was hoping it was passing; now I see it is here to stay in 1.3. Here's another example of the bug in mozilla: URL: http://dhtmlkitchen.com/js/images/preload/index.jsp steps to reproduce: 1) go to url 2) try to use menutree 3) notice that menus don't open The behavior on my site is different, but very similar.
I noticed that AnimTree does not work only when I have position: fixed for the tree root. changing position: fixed fixes my problem.
This looks like a duplicate of bug 138142 [Sorry, I have no idea how to take that further.] Reasons for thinking so are that if a DIV container is inserted around the 3 DIVs in the test case, behavior is quite different, as described for 138142. In this case there is simply no previous element providing a margin.
I can't see any change in the behaviour of testcase between - Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/2006120606 Minefield/3.0a (pre-reflow branch) - Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/2006120804 Minefield/3.0a1 (post-reflow branch)
The testcase in attachment 100046 [details] seems to be working fine both in SeaMonkey 2006120701 (pre reflow branch) and 2006120801 (post) on Linux. The left navigation menu at http://www.ebuconnect.de seems to work fine in 2006120701 but not in 2006120801. (FWIW, the menu works in Opera9, Webkit and IE7). I filed bug 363329 on that. -> WORKSFORME