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tab modal alert pops up slowly and slows down FF




Notifications and Alerts
7 years ago
2 years ago


(Reporter: Stefan, Unassigned)


Firefox Tracking Flags

(Not tracked)



(1 attachment)



7 years ago
Build Identifier: Mozilla/5.0 (X11; Linux x86_64; rv:2.0b8pre) Gecko/20100101 Firefox/4.0b8pre

The new modal tab implementation is lagging, not modal and changes the content outside the dialog box.

Reproducible: Always

Steps to Reproduce:
1. create a new tab, enter "javascript:alert(1)"
2. press the green arrow button ten (10) times.
3. create a new tab, switch back and forth between new and old tab.
Actual Results:  
after 1.: There is a noticeable time lag (~100ms) before the window pops up.
after 2.: a) A pattern of concentric circles appears (screenshot attached).
          b) There are 11 stacked notifications.
after 3.: FF lags noticeably when switching back to the old tab.

Expected Results:  
after 1.: There is no noticeable lag (as before).
after 2.: a) No change outside the box.
          b) There is exactly 1 (modal) notification (per tab).
after 3.: There is no lag (as before).

Comment 1

7 years ago
Created attachment 493228 [details]
concentric circles after repeated execution of "javascript:alert(1)".

Comment 2

7 years ago
The issues were produces with this version:

Built from http://hg.mozilla.org/mozilla-central/rev/7662cf45a33b


6 years ago
Version: unspecified → 4.0 Branch
This bug was reported using a pre-release version of Firefox 4. Now that Firefox 4.0.1 final has been released, can you please update and retest your bug? A fresh profile would be a good starting place to test, 
http://support.mozilla.com/kb/Managing+profiles. If you continue to see the issue, can you please update this bug with your results?

Filter: firefox4prebugsunco

Comment 4

6 years ago
The ability to execute javascript in the addressbar vanished between

g Mozilla/5.0 (X11; Linux x86_64; rv:6.0a1) Gecko/20110510 Firefox/6.0a1 e0f6db50231f
b Mozilla/5.0 (X11; Linux x86_64; rv:6.0a1) Gecko/20110524 Firefox/6.0a1 456c915b3caf

(Bug 662020). Error reproduced with functioning.
Version: 4.0 Branch → Trunk

Comment 5

6 years ago
Issue can be reproduced in recent version with bookmarklet which is repeatedly clicked at instead of clicking at the green arrow key in str #2.
Bulk move to Toolkit::Notifications and Alerts

Filter on notifications-and-alerts-component.
Component: General → Notifications and Alerts
Product: Firefox → Toolkit
Version: Trunk → unspecified

Comment 7

2 years ago
new STR:

1. Create a new bookmark in the bookmark toolbar having the URL "javascript:alert(1)" (without quotation marks).
2. Open an arbitrary website, say http://mozilla.com.
3. Click at the bookmark button ten times.

Actual Results:
a) Each click at the bookmark button darkens the webpage.
b) There are 11 stacked notifications.

(the lag seems to be gone).
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