Entries Sort has repeated fields

[rogertinch]

Description

In viewing any of the entries lists in the admin, the sort by dropdown has a lot of repeated fields.

Steps to reproduce

1. View an entries list
2. Activate sort by dropdown

Additional info

• Craft version: 3.2.0-alpha.7
• PHP version: 7.3.2
• Database driver & version: MySQL 5.6.34
• Plugins & versions:
  "craftcms/cms": "3.2.x-dev#53f00211fe868b3935f14cce7ef713f00b59002e",
  "vlucas/phpdotenv": "^2.4.0",
  "craftcms/redactor": "2.3.3.2",
  "mmikkel/incognito-field": "1.1.1.1",
  "rias/craft-position-fieldtype": "1.0.14",
  "markhuot/craftql": "1.3.2",
  "verbb/super-table": "2.1.20",
  "marionnewlevant/match-input": "v2.0.1",
  "fruitstudios/linkit": "1.1.11",
  "nfourtythree/entriessubset": "1.2.1",
  "craftcms/aws-s3": "1.2.2",
  "nystudio107/craft-units": "1.0.3",
  "doublesecretagency/craft-cpcss": "2.1.0",
  "doublesecretagency/craft-smartmap": "3.2.2.1",
  "craftcms/store-hours": "2.1.1.1",
  "elivz/craft-single-cat": "1.2.1",
  "fortrabbit/craft-copy": "1.0.0-RC5",
  "aelvan/preparse-field": "v1.0.6",
  "spicyweb/craft-fieldlabels": "1.1.1",
  "rias/craft-password-policy": "1.0.4",
  "craftcms/element-api": "2.5.4",
  "craftcms/feed-me": "4.1.0",
  "verbb/workflow": "1.1.9",
  "robuust/craft-reverserelations": "1.1.5",
  "mmikkel/cp-field-inspect": "1.0.5",
  "doublesecretagency/craft-inventory": "2.0.2",
  "fortrabbit/yii-memcached": "^1.0",
  "putyourlightson/craft-sendgrid": "1.1.0",
  "doublesecretagency/craft-cpjs": "2.1.0",
  "doublesecretagency/craft-cpbodyclasses": "2.1.0",
  "solspace/api-caller": "*"

[brandonkelly]

The culprit for this one was a service method (craft\services\Fields::getFieldsByElementType()) that also affects Craft 3.1, so just fixed it there, and merged the fix into the 3.2 branch for the next alpha release.