Affected Products & Versions:
BioStar 2.8.3, 2.8.4 / MSSQL

Summary
BioStar 2 Time & Attendance menu is not accessible with a gray screen. Sometimes it leads you to force logout. 

Issue Reproduction:

i) BioStar 2 install with MSSQL Windows Authentication

ii) T&A register and login or BioStar 2 service is restarted

iii) T&A menu appears a gray screen and never succeeds


Workaround:
Under discussion

Solution:

Upcoming BioStar 2.8.6