### Steps to reproduce
1. Fresh install of firefox extension
2. Click on web-extension icon in firefox (Passman - Locked)
3. Click on Let's begin
4. enter server url
5. enter username
6. click into password field
7. web-extension window closes
8. go back to 2
### Expected behaviour
should be able to enter password
### Actual behaviour
window closes itself when clicking into password field
### Configuration
**Operating system**: Ubuntu 18.04 LTS - fresh install
**Browser**: Firefox 60.0.2 (64-bit) for Ubuntu canonical-1.0
**Extensions that might cause interference**: Foxtrick WebExt (Alpha), Pioneer Enrollment
**Passman version**: current (irrelevant - because cannot connect)
**Extension version**: current
**Nextcloud version**: 13 (irrelevant - because not connected yet)
#### Browser log
Browser log
```
Insert your browser log here, this could for example include:
a) The javascript console log
b) The network log
c) ...
```
---
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Browser log
``` Insert your browser log here, this could for example include: a) The javascript console log b) The network log c) ... ```