Changing appearance font size in Preferences results in a crash.

Description

What steps will reproduce the problem?

With fresh install on Windows 10, selected Tools->Preferences->Appearance, then increase font size to 14, select apply, spyder crashes.

When spyder is restated the new font size that was selected before the crash is being used.

Traceback

  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\preferences\configdialog.py", line 236, in button_clicked
    configpage.apply_changes()
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\preferences\configdialog.py", line 99, in apply_changes
    self.apply_callback()
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\preferences\configdialog.py", line 282, in <lambda>
    self.apply_settings(self.changed_options))
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\preferences\appearance.py", line 236, in apply_settings
    self.main.apply_settings()
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\app\mainwindow.py", line 3122, in apply_settings
    self.apply_panes_settings()
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\app\mainwindow.py", line 3137, in apply_panes_settings
    plugin._update_margins()
  File "C:\Tellurium-Winpython-3.7\python-3.7.7.amd64\lib\site-packages\spyder\plugins\base.py", line 230, in _update_margins
    self._default_margins = layout.getContentsMargins()
AttributeError: 'NoneType' object has no attribute 'getContentsMargins'

Versions

• Spyder version: 4.1.4
• Python version: 3.7.7
• Qt version: 5.12.9
• PyQt5 version: 5.12.3
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0           :  1.4.0 (OK)
chardet >=2.0.0                :  3.0.4 (OK)
cloudpickle >=0.5.0            :  1.5.0 (OK)
diff_match_patch >=20181111    :  20181111 (OK)
intervaltree                   :  None (OK)
IPython >=4.0                  :  7.16.1 (OK)
jedi =0.17.1                   :  0.17.1 (OK)
nbconvert >=4.0                :  5.6.1 (OK)
numpydoc >=0.6.0               :  1.1.0 (OK)
paramiko >=2.4.0               :  2.7.1 (OK)
parso =0.7.0                   :  0.7.0 (OK)
pexpect >=4.4.0                :  4.8.0 (OK)
pickleshare >=0.4              :  0.7.5 (OK)
psutil >=5.3                   :  5.7.0 (OK)
pygments >=2.0                 :  2.6.1 (OK)
pylint >=1.0                   :  2.5.3 (OK)
pyls >=0.34.0;<1.0.0           :  0.34.1 (OK)
qdarkstyle >=2.8               :  2.8.1 (OK)
qtawesome >=0.5.7              :  0.7.2 (OK)
qtconsole >=4.6.0              :  4.7.5 (OK)
qtpy >=1.5.0                   :  1.9.0 (OK)
sphinx >=0.6.6                 :  3.1.2 (OK)
spyder_kernels >=1.9.2;<1.10.0 :  1.9.3 (OK)
watchdog                       :  None (OK)
zmq >=17                       :  19.0.1 (OK)

# Optional:
cython >=0.21                  :  None (OK)
matplotlib >=2.0.0             :  3.2.2 (OK)
numpy >=1.7                    :  1.19.0 (OK)
pandas >=0.13.1                :  1.0.5 (OK)
scipy >=0.17.0                 :  1.5.1 (OK)
sympy >=0.7.3                  :  1.6.1 (OK)

# Spyder plugins:
spyder_opensbml                :  1.1.0 (OK)
spyder_teimport                :  1.1.2 (OK)

[hsauro]

I understand. We’re currently on 4.1.4, once 4.1.5 is out we’ll move to that to see if it helps.

Thanks for great tool.

Herbert Sauro

On Thu, Sep 10, 2020 at 2:40 PM Carlos Cordoba [e-mail] wrote:

Ok, thanks @dalthviz https://github.com/dalthviz for your help. Closing because we were not able to reproduce it, sorry.

Please report this problem to the WinPython guys:

https://github.com/winpython/winpython

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/spyder-ide/spyder/issues/13748#issuecomment-690746325, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAIBSDVRRWCJMR7Q3TPO37TSFFBRBANCNFSM4RDCMRBA .

– Herbert Sauro, Professor University of Washington, Bioengineering 206-685-2119, www.sys-bio.org [e-mail] Books: http://books.analogmachine.org/

[ccordoba12]

@dalthviz, please try to reproduce this problem on Windows with a pip environment.