When children seem to "lash out" or have more tantrums than expected, I typically try to look at the rules that are being set and if there are differences in how parents and caregivers are implementing and reinforcing the rules in the home. Looking at how rules and boundaries are being communicated and follow through in goals occurs in a child's different environments can sometimes explain why there is confusion in a young child.

Why Does Consistency Matter in Parenting? (verywellfamily.com)

Why Consistent Parenting Is So Important, and So Hard | Psychology Today