panel.io.hold not working in threaded app

[TheoMathurin]

Software Version Info

panel 1.5.5
bokeh 3.6.2

When automatic threading is enabled, using hold does not work and an error appears in the logs.

In foo.py:

import panel as pn
from panel.io import hold

@hold()
def increment(e):
    for obj in column_1:
        obj.object = str(e.new)

column_1 = pn.FlexBox(*['0']*100)
button = pn.widgets.Button(name='Increment', on_click=increment)

pn.Column(column_1, button).servable()

and

panel serve foo.py --num-threads 4

Stack traceback and/or browser JavaScript console output

ERROR: panel.io.document - Using the unlocked decorator when running inside a thread is not safe! Ensure you check that pn.state._current_thread matches the current thread id.