Hi guys,I finally found the cause and a solution for the problem.I don't
know why, but the guys here (programmers) have used the keyword "let" in
some Javascript code ("let" was introduced in ECMAScript 6).It was
working fine before SP4, but a simple change in our code to "var",
making the code complaint with old Javascript versions, solved the
problem.The code was in a custom implementation of a Store, inside the
following JS
file:/apps/myproject/components/contexthub/stores/mycustomstore/store...