Jira issue originally created by user pschwisow:
Following the changes made for DDC-1472 and DDC-1416, the EBNF for InExpression should have been updated. It now takes an ArithmeticExpression instead of a SingleValuePathExpression.
Comment created by pschwisow:
I marked this as "Major" because this change represents a BC break. Because EBNF was not updated, I initially believed this to be a bug in ORM and wasted a lot of time debugging Doctrine code before I discovered this change was intentional.