1326941 - Black dots appear in the corners of <progress> element (often in downloads panel)

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect, P3)

Description

[arni2033]

>>>
STR_1:
1. Open url [1]
2. Move mouse above button "B" and other buttons

AR:  Black dots appear right on the corners of <progress> element
ER:  No black dots

> [1] data:text/html,<button>Test</button><br><progress max="100" style="margin-right:20px"></progress><button>B</button><br><button>1</button><br><button>2</button><br><button>3</button><br><button>4</button><br><button>5</button>


STR_2:  (further experiments)
1. Open url [1]
2. Hover mouse over button "B"
3. Hover mouse over button "5", then over button "4"
4. Click button "Test", then button "B", then button "Test"

AR:
 Step 2 - Black dots appear in bottom-right and top-right corners of <progress> element
 Step 3 - Black dot appears in bottom-left corner of <progress> element
 Step 4 - After click on "Test" - bottom-left dot disappears (sometimes all dots disappear)
          After click on "B"    - top-right and bottom-right dots blink (sometimes disappear)
          After click on "Test" (second time) - all dots reliably disappear
ER:
 No black dots

Note:
 I see this almost every day in downloads panel. First I thought that it's a XUL bug and even made XUL
 testcase, but then I found out that it's easily reproducible in HTML. I think it's the same thing.

Comment 1

[Gregory Pappas [:gregp]]

Unable to reproduce.