Bugzilla

This is a follow-up of from Bug 1587927

**1. First simple scenario:**
 - Have multiple (3-5) about:logins page opened and PINNED
 - Restore session enabled
 - Master Password set up
 - Restart Firefox

Actual result: 
 A Master Password prompt will be opened (overlapping each other) for each pinned about:logins tab: https://imgur.com/a/yc578Lc

**2. Second Scenario:**
- Have at least one about:logins tab pinned
- Master Password set up
- Have a facebook tab pinned that has saved credentials (for autocomplete on page load)

Actual result:
Two master password prompts will be opened -> one for about:logins and one for facebook autofill: https://imgur.com/Q8AdIGt

**3. The third scenario (involves Sync):**
 - A combination of the two from above: facebook pinned tab, about:logins and sync enabled.

Actual result:
Besides the opened prompts for the pinned tabs, Firefox Sync may trigger another MP prompt after 10 seconds or so, while the other prompts are still active. **Please see the recording.** 
That white master password prompt is a *bonus*...reproduced it twice and accidentally jumped into my recording. 

**Filling in the master password in one modal will not dismiss the other ones**

This is a follow-up from Bug 1587927

**1. First simple scenario:**
 - Have multiple (3-5) about:logins page opened and PINNED
 - Restore session enabled
 - Master Password set up
 - Restart Firefox

Actual result: 
 A Master Password prompt will be opened (overlapping each other) for each pinned about:logins tab: https://imgur.com/a/yc578Lc

**2. Second Scenario:**
- Have at least one about:logins tab pinned
- Master Password set up
- Have a facebook tab pinned that has saved credentials (for autocomplete on page load)

Actual result:
Two master password prompts will be opened -> one for about:logins and one for facebook autofill: https://imgur.com/Q8AdIGt

**3. The third scenario (involves Sync):**
 - A combination of the two from above: facebook pinned tab, about:logins and sync enabled.

Actual result:
Besides the opened prompts for the pinned tabs, Firefox Sync may trigger another MP prompt after 10 seconds or so, while the other prompts are still active. **Please see the recording.** 
That white master password prompt is a *bonus*...reproduced it twice and accidentally jumped into my recording. 

**Filling in the master password in one modal will not dismiss the other ones**