I have a dynamic property which queries for a controller_type definition.
Elsewhere on the same page, I have a container with a bunch of identical components, reading the status of bits in a database word and retrieving labels for those bits as well. The controller_type from above is a part of the query that finds the correct labels for the bits.
The first time I open this window, I get an error - the query has controller type “null”. There are 16 bits, but the number of errors varies, always less than 16 of course.
It seems that several, but not all, of the bit label queries are running before the controller_type query can complete.