Hi Goran
Thank you for using Syncfusion Products.
We have analyzed the issue and are unable to reproduce the issue from our end. We have provided a simplified sample that we tried to reproduce for your reference. Kindly try the sample at your end and get back to us if the issue is reproducing. If not, please modify the sample to reproduce the issue and get back to us through our Direct-Trac support. If you could tell us your current working version, it will help us to investigate further and provide you a prompt solution.
Sample
link:
CondtitionalFormat_stream.zip
Please
let us know if you need any clarification.
Regards,
Dilli
babu