Casper Signer | Lock screen | UI elements got misaligned after vault was locked during active signature request

[karatnyk]

Pre-condition:
Extension's timeout set to 1 min

Steps to reproduce:

1. Initiate a token transaction on cspr.live website
2. On 'Sign' step click on 'Sign with Casper Signer' button
3. Observe that 'Signature Request' window appeared
4. Wait for more than 1 min to get Signer locked

Expected result: UI elements are properly aligned on vault lock screen
Actual result: UI elements got misaligned after vault was locked during active signature request