When "Monthly" calendar (note: Monthly Big is not affected by this) is chosen, and "Rolling" mode is selected, when viewing events as the year crosses over into the next year, depending on the "Future Only" toggle, those events will either be dimmed (off), or hidden (on).
A workaround until this is repaired is to either:
Turn "Future Only" toggle off
Or, if the "dimmed" nature of that is troublesome, add "Custom CSS" to counteract the effect (but remember to remove this, later):
Internal Ref: 51624
When "Monthly" calendar (note: Monthly Big is not affected by this) is chosen, and "Rolling" mode is selected, when viewing events as the year crosses over into the next year, depending on the "Future Only" toggle, those events will either be dimmed (off), or hidden (on).
A workaround until this is repaired is to either:
.calendar-monthly .month-future .daybox.dim > ul { display: block !important; }