supervisor: Loading log files of add-ons stopped working since updating to 2021.6

The problem

When I navigate to the dashboard page in the supervisor, click on an installed add-on and select the logs tab, nothing showns anymore. Also, when navigating to supervisor -> system and I select a log from the dropdown list, it takes up to 10s before it shows the selected log.

In the supervisor log I come across error log entries like: 2021-06-22 16:44:34 ERROR (MainThread) [homeassistant.components.hassio.handler] Timeout on /addons/a0d7b954_bitwarden/stats request 2021-06-22 16:44:34 ERROR (MainThread) [homeassistant.components.hassio] Failed to to call /addons/a0d7b954_bitwarden/stats - 2021-06-22 16:44:45 ERROR (MainThread) [homeassistant.components.hassio.handler] Timeout on /core/stats request 2021-06-22 16:44:45 ERROR (MainThread) [homeassistant.components.hassio] Failed to to call /core/stats - 2021-06-22 16:44:45 ERROR (MainThread) [homeassistant.components.hassio.handler] Timeout on /supervisor/stats request 2021-06-22 16:44:45 ERROR (MainThread) [homeassistant.components.hassio] Failed to to call /supervisor/stats -

I don’t know exactly what 2021.6 update started causing this

What is version of Home Assistant Core has the issue?

2021.6.6

What was the last working version of Home Assistant Core?

2021.5

What type of installation are you running?

Home Assistant OS

Integration causing the issue

• Home Assistant Supervisor

Link to integration documentation on our website

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response