Hi Radoslaw,
Thanks for using the Syncfusion product.
We have checked the reported query from our side. But the reported issue did not replicate in our sample and DynamicResource binding works as expected. Please find the tested sample from below.
Can you please check with the above sample whether the reported issue occurs in our sample also. If not please revert us back with the issue replicated sample or share replication procedure so that we can able to provide the appropriate solution at our end.
Regards,
Gnana Priya N
Regards,
Gnana Priya N