Spyder freezes when typing in editor

Description

After using Spyder for some period of time, while typing in the editor Spyder suddenly becomes unresponsive and the cursor becomes the spinning beachball of death. The only way to proceed is to force quit Spyder (Activity Monitor confirms that the Python process is unresponsive).

FYI: I run Spyder from a dedicated Anaconda environment created by >> conda create -n spyder-beta -c spyder-ide spyder

What steps will reproduce the problem?

I am uncertain what actions will reproduce the problem, other than to use Spyder for some period of time.

Versions

• Spyder version: 4.0.0b4
• Python version: 3.7.0
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Darwin 18.7.0

Dependencies

pygments >=2.0    :  2.4.2 (OK)
qdarkstyle >=2.6.4:  2.7 (OK)
sphinx >=0.6.6    :  2.1.2 (OK)
psutil >=0.3      :  5.6.3 (OK)
pyls >=0.27.0     :  0.28.0 (OK)
nbconvert >=4.0   :  5.5.0 (OK)
pandas >=0.13.1   :  None (NOK)
numpy >=1.7       :  None (NOK)
sympy >=0.7.3     :  None (NOK)
cython >=0.21     :  None (NOK)
qtconsole >=4.5.2 :  4.5.2 (OK)
IPython >=4.0     :  7.7.0 (OK)
matplotlib >=2.0.0:  None (NOK)
pylint >=0.25     :  2.3.1 (OK)

[mmagnuski]

I’ve had multiple freezes during past four weeks when typing in the Spyder editor . If I am working in Spyder longer than 1 hour it is almost guaranteed that I get a freeze. When I work in Spyder for multiple hours I usually have at least one freeze every 1-2 hours (I restart Spyder). My hunch is that it is related to code completions running in Spyder - I often got the freezes when a completion box was open/opening. Unfortunatelly it is hard to narrow this down as it happens approximately once an hour without very clear pattern.

[svso]

I have the same problem. Spyder is often hanging when I am writing code, - I suspect it happens if I am typing too quickly. Maybe because the automatic syntax checking is not hanging on fast enough.