UI: empty devices list after refresh

In the devices tab, after refreshing page and clicking All devices button, the list of devices is cleared and stays empty for around 10s.

Steps to reproduce:

• have at least one accepted device;
• go to devices tab (device(s) should be on a list)
• refresh page
• click "All devices"
• the list should be empty now and device(s) will appear after some time (~10s)