Closed Bug 1202496 Opened 9 years ago Closed 6 years ago

Pages with onbeforeunload event can cancel the restart after changing multiprocess mode (on/off)

Categories

(Firefox :: Settings UI, defect)

Product:
Firefox
Component:
Settings UI
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED WONTFIX
Tracking Flags:
Tracking Status
firefox43 --- affected

People

(Reporter: arni2033, Unassigned)

References

(
URL
)

Details

STR:   (Win7_64, Nightly 43, 32bit, ID 20150905030205, new profile, safe mode)
1. Open page   data:text/html,<body onbeforeunload="return 1">
2. Open about:preferences#general
3. Click on "Enable multi-process Nightly" checkbox to change its state
4. Click "Stay on page" in the alert message

Result:       Checkbox "Enable multi-process Nightly" changed its state, but browser hasn't restarted
Expectations: Either (A) or (B), or (C) should happen:
             A) Browser restarts after clicking "Stay on page"
             B) Browser suggests the button on about:preferences#general to restart, if
                multiprocess state has changed (reference: button near installed add-on from AMO).
             C) Or clicking on "OK" should do nothing.
Has STR: --- → yes
Now, to reproduce the bug, you have to click on the opened page in Step 1 (according to bug 636905)
Corrected STR:
 1. Open page   data:text/html,<body onbeforeunload="return 1">   in a new tab. Click on the page.
 2. Open about:preferences#general in a new tab
 3. Click on "Enable multi-process Nightly" checkbox to change its state. Click "OK" (maybe twice)
 4. Click "Stay on page" in the alert message on the page from Step 1.
Results in Comment 0.
We removed this checkbox from the prefs.
Status: NEW → RESOLVED
Closed: 6 years ago
Resolution: --- → WONTFIX
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