SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327 when opening many *.py files on the command line

Steps to reproduce

• Consider for example a checkout of Qt for Python https://code.qt.io/cgit/pyside/pyside-setup.git/
• Run qtcreator sources/pyside2/tests/QtWidgets/*.py
• note warnings flood

  OFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  SOFT ASSERT: "m_state == Initialized" in file client.cpp, line 327
  ...
  

  The assumption is that it is a race condition in initialization of the LSP client.

Sometimes, crashes occur later on.