Selecting text in Spyder editor resets view position after switching focus

[Thanos-DB]

When I switch focus from the Spyder editor to another application and return, attempting to select text using Shift+click causes the editor's view to jump back to the previous line I was on, rather than allowing me to select text from the new view position.

Steps to reproduce (as seen in the attached vide):

• Click within the Spyder editor (e.g., at line 200).
• Switch focus to another application (e.g., click on line 69 in a different editor, as shown in the video).
• Return to the Spyder editor, scroll to a different line (e.g., line 1), and try to select text using Shift+click.

Observed behavior:
When I press Shift, the editor's view immediately jumps back to the previous position (line 200), preventing me from selecting text from the current view. The selection works fine if i don't change the focus, also after auto-jumping to line 200 if i scroll once again it will work.

Expected behavior:
Pressing Shift should allow text selection from the new view position without resetting back to the previous line regardless of changing focus to a different software.

video: Screencast from 01-11-24 12:22:38.webm

• Spyder version: 5.5.6 (pip)
• Python version: 3.10.12 64-bit
• Qt version: 5.15.2
• PyQt5 version: 5.15.9
• Operating System: Linux-6.8.0-45-generic-x86_64-with-glibc2.35

Mandatory:

atomicwrites >=1.2.0 : 1.4.1 (OK)
chardet >=2.0.0 : 4.0.0 (OK)
cloudpickle >=0.5.0 : 3.0.0 (OK)
cookiecutter >=1.6.0 : 2.5.0 (OK)
diff_match_patch >=20181111 : 20230430 (OK)
importlib_metadata >=4.6.0 : 7.0.0 (OK)
intervaltree >=3.0.2 : 3.1.0 (OK)
IPython >=8.13.0,<9.0.0,!=8.17.1 : 8.20.0 (OK)
jedi >=0.17.2,<0.20.0 : 0.18.1 (OK)
jellyfish >=0.7 : 1.0.3 (OK)
jsonschema >=3.2.0 : 4.16.0 (OK)
keyring >=17.0.0 : 23.5.0 (OK)
nbconvert >=4.0 : 6.5.4 (OK)
numpydoc >=0.6.0 : 1.6.0 (OK)
parso >=0.7.0,<0.9.0 : 0.8.3 (OK)
pexpect >=4.4.0 : 4.8.0 (OK)
pickleshare >=0.4 : 0.7.5 (OK)
psutil >=5.3 : 5.9.0 (OK)
pygments >=2.0 : 2.17.2 (OK)
pylint >=3.1,<4 : 3.3.1 (OK)
pylint_venv >=3.0.2 : 3.0.3 (OK)
pyls_spyder >=0.4.0 : 0.4.0 (OK)
pylsp >=1.12.0,<1.13.0 : 1.12.0 (OK)
pylsp_black >=2.0.0,<3.0.0 : 2.0.0 (OK)
qdarkstyle >=3.2.0,<3.3.0 : 3.2.3 (OK)
qstylizer >=0.2.2 : 0.2.2 (OK)
qtawesome >=1.3.1,<1.4.0 : 1.3.1 (OK)
qtconsole >=5.5.1,<5.6.0 : 5.5.1 (OK)
qtpy >=2.1.0 : 2.4.1 (OK)
rtree >=0.9.7 : 1.1.0 (OK)
setuptools >=49.6.0 : 59.6.0 (OK)
sphinx >=0.6.6 : 7.2.6 (OK)
spyder_kernels >=2.5.2,<2.6.0 : 2.5.2 (OK)
textdistance >=4.2.0 : 4.6.1 (OK)
three_merge >=0.1.1 : 0.1.1 (OK)
watchdog >=0.10.3 : 3.0.0 (OK)
xdg >=0.26 : 0.27 (OK)
zmq >=24.0.0 : 24.0.1 (OK)

Optional:

cython >=0.21 : None (NOK)
matplotlib >=3.0.0 : 3.8.2 (OK)
numpy >=1.7 : 1.26.3 (OK)
pandas >=1.1.1 : 2.1.3 (OK)
scipy >=0.17.0 : 1.11.1 (OK)
sympy >=0.7.3 : 1.12 (OK)