Resolved lint warning/error message does not go away unless Atom is restarted

[ginomempin]

I randomly encounter this issue wherein I've already resolved the linter warning/error but the warning/error message does not disappear until I've restarted Atom.

Here's a simple example:

I originally had 2 blank lines, which triggered the warning.
But I've already removed the extra blank line, saved the file, but the warning's still there.
After restarting Atom, that warning goes away.

I can't pinpoint the exact steps how to reproduce this (sorry!).
I checked the dev tools window when it happens, but I didn't see any error messages logged.

Here's my env details:

• Ubuntu 16.04
• Atom 1.24.0 x64
• linter-python
  • 3.1.2
  • from config.cson

       "linter-python":
            ignoreCodes: "R1705,C0111,C901,D203,D212,D413,E116,E201,E202,E203,E221,E402,E501"
            withMcCabe: true
            withPep257: true
            withPep8: true
            withPyflakes: true
            withPylint: true
    

I'll try to provide more information when I can.