Same issue with my MBA 2020 vs. the mouse (KB is wireless) for almost two months, swapped the noname USB-C hub for a "proper" Anker, still the same. What I discovered is, apart from rebooting, if I connect the hub's USB3 to another USB3 hub (posh Dell monitor) and connect the mouse there, it works. I think it's not about hardware as a reboot fixes the issue for me too.
Good to hear somebody dealing with this through the proper channels. I pinged my friend in Cupertino and he promised he'll take a look at the internal bug reports etc., but our communication is one-way most of the time as he can't let stuff slip.
Same issue with my MBA 2020 vs. the mouse (KB is wireless) for almost two months, swapped the noname USB-C hub for a "proper" Anker, still the same. What I discovered is, apart from rebooting, if I connect the hub's USB3 to another USB3 hub (posh Dell monitor) and connect the mouse there, it works. I think it's not about hardware as a reboot fixes the issue for me too.
Good to hear somebody dealing with this through the proper channels. I pinged my friend in Cupertino and he promised he'll take a look at the internal bug reports etc., but our communication is one-way most of the time as he can't let stuff slip.