writing "@" triggers unwanted prompt for Master Password

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Write a new E-mail in TB
2. use the @ (German Keyboard alt/L)
3.

What is the expected output? What do you see instead?
to write the usual "at" sign - instead I get a prompt to enter the master 
password for the Software security module
but I don't get to write the "at", I have to copy/paste it.

What Master Password+ version?
1.21.3

On what Firefox/Thunderbird version?
TB 31.3.0

On what operating system?
Mac OS 10.9.4, MacBookPro 8,2 (15" core i7)

Please provide any additional information below.
the issue disappears when I deactivate Master Password+, but I also use:
Keychain Services Integration 1.1.7
Google contacts 0.7.12
Lightning 3.3.1
Provider for Google Calendar 1.0.2
Contact Tabs 2.0.12

Original issue reported on code.google.com by tym...@gmail.com on 22 Dec 2014 at 11:59

Attachments:

• [Bildschirmfoto 2014-12-22 um 12.53.41.png](https://storage.googleapis.com/google-code-attachments/masterpasswordtimeoutplus/issue-77/comment-0/Bildschirmfoto 2014-12-22 um 12.53.41.png)

[GoogleCodeExporter]

I am glad not to have to enter the 8 passwords, but the “@“ issue is a 
major hindrance if you want to enter new email adresses.

Original comment by tym...@gmail.com on 22 Dec 2014 at 12:03

[GoogleCodeExporter]

ALT+L is default hotkey for lock/unlock

To change that Open MP+ options, go to general tab and change login/logout 
hotkey from ALT + L to something else.

P.S.
I was unaware that some keyboards use ALT key for typing anything, only new 
about using numpad while holding ALT key for entering any charters like ☺ 
(ALT+1) or @ (ALT+64)

Original comment by van...@gmail.com on 22 Dec 2014 at 1:06