Movement to push for dual citizenship for immigrants

Yet some of them are still being denied citizenship after they’ve renounced and consequently gotten divorced.

I wonder, could that be because they got divorced after renouncing, but before they applied for citizenship (TARC and one year waiting period for ID card)?
It would seem to me that if they’d already applied for their TARC and were doing their one year waiting period for their ID Cards then it wouldn’t be an issue, because then they would already have ROC nationality and an ROC passport.