Doubleclicking login button can lead to 400 BadRequest error page

[Algorithman]

Describe the bug
When logging in and doubleclicking the login button it can lead to a 400 (BadRequest) page.

To Reproduce
Steps to reproduce the behavior:

1. Restart server (IMPORTANT)/start smartstore via VS
2. Go to login page
3. Input your login data and doubleclick (important) the login button
4. Observe the BadRequest error message

Since I only observed this right after a server restart I think it is some caching issue (maybe a weird race condition).

Expected behavior
Logging in as usual.

Desktop (please complete the following information):

• OS: linux, on windows I observed this when running a debug session from VS, thought at first it would only occur there
• Browser all

[Michael-Herzog]

Thanks for reporting!