In atom-monokai-soda/index.less:

Starting from Atom v1.13.0, the contents of atom-text-editor elements are no longer encapsulated within a shadow DOM boundary. This means you should stop using :host and ::shadow pseudo-selectors, and prepend all your syntax selectors with syntax--. To prevent breakage with existing style sheets, Atom will automatically upgrade the following selectors:

• atom-text-editor, :host => atom-text-editor,atom-text-editor

• atom-text-editor .gutter, :host .gutter => atom-text-editor .gutter,atom-text-editor .gutter

• atom-text-editor .gutter .line-number.cursor-line, :host .gutter .line-number.cursor-line => atom-text-editor .gutter .line-number.cursor-line,atom-text-editor .gutter .line-number.cursor-line

• atom-text-editor .gutter .line-number.cursor-line-no-selection, :host .gutter .line-number.cursor-line-no-selection => atom-text-editor .gutter .line-number.cursor-line-no-selection,atom-text-editor .gutter .line-number.cursor-line-no-selection

• atom-text-editor .wrap-guide, :host .wrap-guide => atom-text-editor .wrap-guide,atom-text-editor .wrap-guide

• atom-text-editor .indent-guide, :host .indent-guide => atom-text-editor .indent-guide,atom-text-editor .indent-guide

• atom-text-editor .invisible-character, :host .invisible-character => atom-text-editor .invisible-character,atom-text-editor .invisible-character

• atom-text-editor .search-results .marker .region, :host .search-results .marker .region => atom-text-editor .search-results .syntax--marker .region,atom-text-editor .search-results .syntax--marker .region

• atom-text-editor .search-results .marker.current-result .region, :host .search-results .marker.current-result .region => atom-text-editor .search-results .syntax--marker.current-result .region,atom-text-editor .search-results .syntax--marker.current-result .region

• atom-text-editor.is-focused .cursor, :host(.is-focused) .cursor => atom-text-editor.is-focused .cursor,atom-text-editor .cursor

• atom-text-editor.is-focused .selection .region, :host(.is-focused) .selection .region => atom-text-editor.is-focused .selection .region,atom-text-editor .selection .region

• atom-text-editor.is-focused .line-number.cursor-line-no-selection, atom-text-editor.is-focused .line.cursor-line, :host(.is-focused) .line-number.cursor-line-no-selection, :host(.is-focused) .line.cursor-line => atom-text-editor.is-focused .line-number.cursor-line-no-selection, atom-text-editor.is-focused .line.cursor-line,atom-text-editor .line-number.cursor-line-no-selection,atom-text-editor .line.cursor-line

• .comment => .syntax--comment

• .string => .syntax--string

• .constant.numeric => .syntax--constant.syntax--numeric

• .constant.language => .syntax--constant.syntax--language

• .constant.character, .constant.other => .syntax--constant.syntax--character, .syntax--constant.syntax--other

• .keyword => .syntax--keyword

• .storage => .syntax--storage

• .storage.type => .syntax--storage.syntax--type

• .entity.name.class => .syntax--entity.syntax--name.syntax--class

• .entity.other.inherited-class => .syntax--entity.syntax--other.syntax--inherited-class

• .entity.name.function => .syntax--entity.syntax--name.syntax--function

• .variable.parameter => .syntax--variable.syntax--parameter

• .entity.name.tag => .syntax--entity.syntax--name.syntax--tag

• .entity.other.attribute-name => .syntax--entity.syntax--other.syntax--attribute-name

• .support.function => .syntax--support.syntax--function

• .support.constant => .syntax--support.syntax--constant

• .support.type, .support.class => .syntax--support.syntax--type, .syntax--support.syntax--class

• .invalid => .syntax--invalid

• .invalid.deprecated => .syntax--invalid.syntax--deprecated

• .meta.structure.dictionary.json .string.quoted.double.json => .syntax--meta.syntax--structure.syntax--dictionary.syntax--json .syntax--string.syntax--quoted.syntax--double.syntax--json

• .meta.diff, .meta.diff.header => .syntax--meta.syntax--diff, .syntax--meta.syntax--diff.syntax--header

• .markup.deleted => .syntax--markup.syntax--deleted

• .markup.inserted => .syntax--markup.syntax--inserted

• .markup.changed => .syntax--markup.syntax--changed

Automatic translation of selectors will be removed in a few release cycles to minimize startup time. Please, make sure to upgrade the above selectors as soon as possible.

Observed:
Syntax highlighting colors have changed between 1.31 and 1.32.

Defect observed in:
.js (javascript) files

Probable cause:
The implementation of the tree-sitter parsing system is most likely to blame.