threading.client behaves different from sync.client

[vstadnytskyi]

In [11]: ctx.get_pvs?
timeout : number or None, optional
    Number of seconds before a CaprotoTimeoutError is raised. This
    default can be overridden for any specific operation. By default,
    fall back to the default timeout set by the Context. If None, never
    timeout.

In [8]: RBV, = ctx.get_pvs('NIH:TEMP.RBV', timeout = 20)

Exception in thread search:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 926, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/caproto/threading/client.py", line 1113, in _process_search_results_l
oop
    cm = self.get_circuit_manager(address, pv.priority)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/caproto/threading/client.py", line 1161, in get_circuit_manager

    cm = VirtualCircuitManager(self, circuit, self.selector)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/caproto/threading/client.py", line 1313, in __init__
    raise CaprotoTimeoutError(f"Circuit with server at {host}:{port} "
caproto._utils.CaprotoTimeoutError: Circuit with server at 128.231.5.169:5068 did not connect within 2.0-second timeout.

user:T user-13$ caproto-get NIH:TEMP.RBV 
NIH:TEMP.RBV                              [23.403]
user:T user-13$ caproto-get NIH:TEMP.RBV 
NIH:TEMP.RBV                              [23.403]

In [14]: from caproto.sync.client import read

In [15]: read('NIH:TEMP.RBV')
Out[15]: ReadNotifyResponse(data=array([23.40296364]), data_type=<ChannelType.DOUBLE: 6>, data_count=1, status=CAStatusCode(name='ECA_NORMAL', code=0, code
_with_severity=1, severity=<CASeverity.SUCCESS: 1>, success=1, defunct=False, description='Normal successful completion'), ioid=0, metadata=None)