The calculation of the orbital evolution stalls (the step size is driven to zero) in some instances when a tidal frequency break is introduced in the phase lag.
It seems that the bug is related to LagSpinBreakCondition or LagForcingFrequencyBreakCondition. Removing those from the list of monitored stopping conditions resolves the issue.
The calculation of the orbital evolution stalls (the step size is driven to zero) in some instances when a tidal frequency break is introduced in the phase lag.