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On 31.03. only months with 31 days have been shown in this field.
On 01.04. the problem disappeared. But I expect it will be there again on 31.05.
Same problem in version 7.x-1.x-dev
Comments
Comment #1
ykyuen CreditAttribution: ykyuen commentedThis problem occurs on 7.x version also. it is becoz of the strtotime(+1 month) problem.
To fix the problem, edit the hotel_booking.calendars.inc line 73.
The 6.x version could be fixed in similar way.