Android Question Downloading an App to Phone Disappearing Act

Hi:

I've been working on two different apps and now I am seeing a problem when downloading them to my Pixel 3a. If I have app1 on my phone then download app2, using the bridge or USB, this will cause app1 currently on my phone to disappear. If I app2 is on the phone, downloading app1 will cause app2 to disappear. I tried downloading another app - that worked fine, neither app1 nor app2, if present on the phone, disappeared.

I get the feeling that downloading process sees app1 and app2 as the same app. Both apps have different '#ApplicationLabel:' names.

Any ideas on to fix this?

Thanks.

William