There was a known bug in early releases of R5 that created problems when selecting "Allow values not in list" with a formula combobox - the choices are not visible. This was reported for R5.0 - through R5.04a and I'm experiencing it R5.05. However, it works in R5.09 and later as well in R6.
Can anyone tell me which version it was fixed in. I can't seem to find an SPR or entry in the fixlist. Better still, was a workaround ever found?