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i've encountered some strange behaviour with BricsCAD 20-1-08 German on Win10.
When i create a angular dimension with DIMASSOC = 0 it works as long i do not try to overwrite the dimension text manually.
If i do so the dimension text itself is created but has no content (a blank text "").
In V19 this has worked well.
So here are the steps to reproduce this:
draw 2 lines
pick first line
pick second line
when prompted for dimension text: enter any value
place a empty dimension text
get nervous... :-)