453818 - combobox popup overflows outside screen

Status: RESOLVED DUPLICATE of bug 314939

(Core :: Layout: Form Controls, defect)

Description

[Oskar]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

Selectbox overflows outside screen when it's in the middle-upper part of the window. Only seems to happen with resolutions <= [* x 800px] .

Reproducible: Always

Steps to Reproduce:
1. Select a screen resolution <= 800 px high. Width does not matter.
2. Scroll the page down so that the selectbox is in the last position where it still displays the selectbox in a upwards manner.
Actual Results:  
Notice that just before it switches from going up to downwards the selectbox is overflowed outside the screen.



Expected Results:  
The selectbox should instead scroll itself or be displayed downwards.

Screenshot of bugg:

http://img233.imageshack.us/my.php?image=badselectmg6.jpg

Comment 1

[Oskar]

Attachment: Screenshot of problem

Comment 2

[Oskar]

I think this problem has to do with the number of element in the select + big font size because when I have even more elements in the list this does _not_ happen.. I'm going to investigate futher in that track..

Comment 3

[Oskar]

Attachment: A html example of the problem

Comment 4

[Boris Zbarsky [:bzbarsky]]

I believe we have existing bugs about the behavior of comboboxes at low screen heights (low compared to font-size).

Comment 5

[Oskar]

Well I couldn't/can't find it.. I've tried searching for;
Combobox overflow
Comboxbox height
Selectbox overflow
Selectbox height
Select height
Select overflow

Comment 6

[Boris Zbarsky [:bzbarsky]]

"select screen" does the trick.