Yes, I had the same problem for December, and January is accruing incorrectly. 

I have some employees that we deduct health insurance cost from their paychecks.  It looks like that is the culprit.  I have not changed those calculations, but the GL accrual is taking the Gross payroll and then subtracting the Health Insurance deductions before calculating Workers Comp.

I had a similar problem - workers comp report #5-1-5-21 reports salaried employee wages as double the weekly amount

assigned, therefore, total wages do not reconcile with quarter to date or year to date earnings. I spoke with tech support

Tristan who informed me that this is a software issue and developers are working on fixing the problem.

This was the link that Tristan gave me to reference:
https://support.na.sage.com/selfservice/viewdocument.do?externalID=95032

I had a similar problem - workers comp report #5-1-5-21 reports salaried employee wages as double the weekly amount

assigned, therefore, total wages do not reconcile with quarter to date or year to date earnings. I spoke with tech support

Tristan who informed me that this is a software issue and developers are working on fixing the problem.

This was the link that Tristan gave me to reference:
https://support.na.sage.com/selfservice/viewdocument.do?externalID=95032