I have run into an issue with the cull element. Text passed into it loses info about text height.
Text are gathered via elefront RefByType - this too works a clumsily. At first it detects h=1, when forced to update it reads correct values.
if the problem really comes from the CullPattern, then instead of culling then DeconstructText you could DeconstructText on the whole text list, then just cull the Height