Steps to reproduce:

1. on test instance import hosts from attached .yaml file (29 example hosts)
2. after importing hosts, use Latest data, select every of 29 hosts and click "apply"
3. then click reset, again import 29 hosts, then in "name" box type: "cpu" and click "apply"

Result:
as shown on screenshot "1", some hosts are missing after only checking them from host box and then clicking "apply"

when we add additional value to "name" box, in this case "cpu" it correctly lists every host (29 total) - shown on screenshot "2"

tested on 6.0.33 and 6.0.32