Please report to the report to the feedback section to samsung.
Side note
https://eu.community.samsung.com/t5/samsung-lounge/ui8-please-don-t-see-it-as-an-update/td-p/1247394..." Being a beta, expect some issues . The whole point of this beta is that you, the community, can help give feedback on issues that need to be ironed out. Giving feedback is vital for a smoother release. It's nice getting the new UI 8, but remember, this is a beta for a reason"
Ive not experienced this myself. So a solution is hard to find beyond whats already been said above by
@arianwen27*hopefully just a compatibility issue being the beta phase