Installed Bitbucket 7.21 on Ubuntu 20.04. Everything works when I directly connect to http://bitbucket.myserver.mytld:7990.
I configured Apache2 reverse proxy and now none of the CSS, img, and JS resources are found, I simply get the plain unadorned html. That indicates that the bitbucket server IS being accessed through the proxy, just none of the resources are there. Comparing the <img src=... and other resource paths with the WebInspector shows that they are identical between a page directly accessed vs. the same page accessed through the proxy.

Here is my virtual host file:
<VirtualHost *:80>
ServerName bitbucket.myserver.mytld
ServerAdmin webmaster@localhost
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
ProxyPreserveHost On
ProxyRequests Off
ProxyVia Off
<Proxy *>
Require all granted
</Proxy>
ProxyPass / http://localhost:7990/bitbucket
ProxyPassReverse / http://localhost:7990/bitbucket
</VirtualHost>
and bitbucket.properties
# context path
server.context-path=/bitbucket
#### settings for http
server.scheme=http
server.proxy-port=80
server.proxy-name=bitbucket.myserver.mytld
What am I missing?
Thanks for any help