Tier price on configurable product sorting sometimes wrong

[matin73]

In some cases sorting of configurable products in combination with swatches is not correct done.

Preconditions

PHP 7.0.25
MySQL 5-7

Steps to reproduce

Saving tier prices for configurable product for each article - same prices. Sorting in admin is correct, but some of the articles have in frontend wrong sorting

Expected result

Sorting should be for all articles the same - starting with smallest number - like;
Buy 12 for 5,88 € each and save 8%
Buy 96 for 4,80 € each and save 25%
Buy 300 for 3,96 € each and save 38%

Actual result

Some of the configurable articles have correct sorting, and some not. see screenshots

[magento-engcom-team]

@matin73, thank you for your report.
We've created internal ticket(s) MAGETWO-83733 to track progress on the issue.

[magento-engcom-team]

Hi @vshatylo. Thank you for working on this issue.
Looks like this issue is already verified and confirmed. But if your want to validate it one more time, please, go though the following instruction:

• 1. Add/Edit Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 2. Verify that the issue is reproducible on 2.3-develop branch

  Details

  - Add the comment @magento-engcom-team give me 2.3-develop instance to deploy test instance on Magento infrastructure.
  - If the issue is reproducible on 2.3-develop branch, please, add the label Reproduced on 2.3.x.
  - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!

• 3. Verify that the issue is reproducible on 2.2-develop branch.

  Details

  - Add the comment @magento-engcom-team give me 2.2-develop instance to deploy test instance on Magento infrastructure.
  - If the issue is reproducible on 2.2-develop branch, please add the label Reproduced on 2.2.x

• 4. If the issue is not relevant or is not reproducible any more, feel free to close it.