Caching per_session not working

[MarcSkovMadsen]

I'm on panel==1.3.6. I would like to cache per session. But I don't believe its working.

import panel as pn

pn.extension()

@pn.cache(per_session=True)
def get_data():
    print("running get_data")
    return "Some data"

pn.panel(get_data()).servable()

I would expect to get "running get_data" printed each time new session/ ServerConnection is created. But its not.

$ panel serve script.py --autoreload --index script.py
running get_data
2024-01-07 07:09:59,739 Starting Bokeh server version 3.3.2 (running on Tornado 6.3.3)
2024-01-07 07:09:59,741 User authentication hooks NOT provided (default user enabled)
2024-01-07 07:09:59,743 Bokeh app running at: http://localhost:5006/
2024-01-07 07:09:59,743 Bokeh app running at: http://localhost:5006/script
2024-01-07 07:09:59,743 Starting Bokeh server with process id: 31575
2024-01-07 07:10:01,916 WebSocket connection opened
2024-01-07 07:10:01,916 ServerConnection created
2024-01-07 07:10:11,724 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:11,910 WebSocket connection opened
2024-01-07 07:10:11,910 ServerConnection created
2024-01-07 07:10:12,850 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:13,019 WebSocket connection opened
2024-01-07 07:10:13,019 ServerConnection created
2024-01-07 07:10:13,829 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:14,132 WebSocket connection opened
2024-01-07 07:10:14,133 ServerConnection created
2024-01-07 07:10:14,621 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:14,785 WebSocket connection opened
2024-01-07 07:10:14,785 ServerConnection created
2024-01-07 07:10:15,324 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:15,504 WebSocket connection opened
2024-01-07 07:10:15,505 ServerConnection created
2024-01-07 07:10:15,990 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:16,203 WebSocket connection opened
2024-01-07 07:10:16,204 ServerConnection created
2024-01-07 07:10:16,638 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:16,796 WebSocket connection opened
2024-01-07 07:10:16,797 ServerConnection created
2024-01-07 07:10:17,326 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:17,679 WebSocket connection opened
2024-01-07 07:10:17,680 ServerConnection created
2024-01-07 07:10:17,971 WebSocket connection closed: code=None, reason=None
2024-01-07 07:10:18,152 WebSocket connection opened
2024-01-07 07:10:18,152 ServerConnection created
2024-01-07 07:10:31,463 WebSocket connection opened
2024-01-07 07:10:31,463 ServerConnection created