'HaProxy ingress controller v0.12 on Kubernetes v1.17

I know version 1.18 is required per documentation. But was able to find why ... from change log it is not that clear what breaks it (https://github.com/jcmoraisjr/haproxy-ingress/blob/master/CHANGELOG/CHANGELOG-v0.12.md).

I can't upgrade cluster at the moment, while would like to go to v0.12 of ingress controller. Has anybody tried? Which feature of 1.18 breaks it?

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