We have released a compatibility update that addresses issues that appear when using MariaDB.
MPFT :: change()
A default implementation for a change method for all field types, designed to be called when any field updates are made. This default implementation is empty, but other field types can override the method to clear out any cached results of queries based on the value of the field – the Related field types use this method for this purpose.
Note: this method is intended for internal use only.