Missed misspellings aftrer certain words

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Prerequisites

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  • Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
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Description

Spell check fails to mark misspelled words after certain words, but correctly marks them after other words

Steps to Reproduce

1. Set locales to ru-RU
2. File -> New File
3. Type two words: "волки иззз".

Expected behavior:

The first word is spelled correctly, but the second should have been marked as a misspelling

Actual behavior:

Misspelling is not reported

Reproduces how often:

100%

Versions

Atom : 1.57.0
Electron: 9.4.4
Chrome : 83.0.4103.122
Node : 12.14.1

Fedora release 33 (Thirty Three)

Flatpak 1.10.2

Additional Information

• If I type "волк" instead of "волки" ("волк иззз") the misspelling in the second word is correctly detected.
• If I type "изззз" instead of "иззз" ("волки изззз") the misspelling is also detected.