293576 - display:table-caption for a table cell makes it follow the mouse on hover

Status: RESOLVED FIXED

(Core :: Layout: Tables, defect)

Description

[Caleb]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050509 Firefox/1.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050509 Firefox/1.0+

When you move your mouse over a table cell that has display:table-caption set
makes it move up until the mouse cursor.

Reproducible: Always

Steps to Reproduce:

Comment 1

[Caleb]

Attachment: testcase

To reproduce:

Move your mouse at the right side of the cell and watch it move.

Comment 2

[:Gijs (he/him)]

Confirmed on Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.7)
Gecko/20050414 Firefox/1.0.3

Comment 3

[Ben Fowler]

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b2) Gecko/20050511
Firefox/1.0+

When you say "up", is this the same as "along to the right" -- "upto", or
are you seeing some vertical movement?

I think that I am seeing what you are, but I am not sure what the expected
behaviour is: When we change a <td> into a table caption we will change the
size and position of the table, I would expect undefined behaviour.

Comment 4

[Caleb]

(In reply to comment #3)
> When you say "up", is this the same as "along to the right" -- "upto", or
> are you seeing some vertical movement?

Yes, I meant up to (vertical movement)

Comment 5

[:Gijs (he/him)]

(In reply to comment #4)
> (In reply to comment #3)
> > When you say "up", is this the same as "along to the right" -- "upto", or
> > are you seeing some vertical movement?
> 
> Yes, I meant up to (vertical movement)

That's odd (unless I'm still misunderstanding) as for me, it moved to the right
(the tr's width kept expanding, while the td's width stayed the same, judging
from DOMi).

Comment 6

[Caleb]

Jesus Christ, you should ignore me when I'm sleepy :)

The cell expands vertically and moves horizontally (to the right).

Comment 7

[Bernd]

Could somebody enlighten my why on earth this should block 1.8b3. This scenario
is rather excotic. Or please show me one reputable page that uses such a voodoo.

Comment 8

[Boris Zbarsky [:bzbarsky]]

This shouldn't be blocking any releases for the foreseeable future.

Comment 9

[Mats Palmgren (inactive)]

Attachment: Frame dumps

Comment 10

[Boris Zbarsky [:bzbarsky]]

Fixed by checkin for bug 162063.  Added test.