Welcome to the Community,
It looks like you are using the GA version (v1.8) of the Host Client. The current version (v.1.18) contains several new features as well as bug fixes, so I'd suggest that you update the Host Client "esx-ui" to see whether this solves your issue.
The mentioned Host Client version is included in the latest patch bundle, or can be updated individually (see e.g. https://esxi-patches.v-front.de/ESXi-6.5.0.html for the download link). Please make sure that you clear your browser cache after updating the Host Client!