This hasn't happened in a long time, but....
After upgrading to Fusion 11.5.3 running on macOS 10.15.4, my Windows 10 (version 1909) VM won't connect to the Internet.
I've repaired VMTools, uninstalled it and re-installed it, to no avail.
Made no other changes to the VM or to Fusion's settings.
I have exactly the same problem.
Upgraded to VMware Fusion from 11.5.1 to 11.5.3. Running Mac OS Mojave 10.14.6. Network worked flawlessly in the previous version.
Default network settings: bridged / auto detect.
After VMware Fusion 11.5.3 starts, network does work for a few minutes and then stops.