Layered Navigation: “Equalize product count” not working as expected

[trinitecDev]

Preconditions (*)

2.2.7

Steps to reproduce (*)

Create a custom attribute of type price.
Got to Stores > Configuration > Catalog > Layered Navigation and set “price navigation step calculation” to “Automatic (equalize product counts)”

Expected result (*)

I would expect ten ranges with equalized product counts (as the name suggests).

Actual result (*)

Result is not equal ranges but one in the end with half of the products in it:

Whats also weird is the last to -0.01 value, since the lowest value is 250 and the highest 6000 (i checked that in the catalog_product_entity_decimal table).

[magento-engcom-team]

Hi @trinitecDev. Thank you for your report.
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@trinitecDev do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[magento-engcom-team]

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[magento-engcom-team]

✅ Confirmed by @engcom-backlog-nazar
Thank you for verifying the issue. Based on the provided information internal tickets MAGETWO-98880, MAGETWO-98881 were created

Issue Available: @engcom-backlog-nazar, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[magento-engcom-team]

Hi @Nazar65. Thank you for working on this issue.
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