Duplicate PHP sessions

We are currently experiencing duplicate sessions with one of our Magento implementations and we have no clue where the issue could be.

Our set up consists of a Magento 2.3.2 docker service with 3 instances which use a single Redis as sessions store according to the Magento docs. However somehow customers suddenly experience different data in their quote’s, data that belongs to other customers (name address e.t.c.) due to sessions being handed out multiple times (we can see this in the customer_visitor table).

Did anyone experience anything similar? or does anyone suspect any direction we could look at?

submitted by /u/darkshifty
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