Merge does not overwrite booleans

[parinapatel]

Output of helm version:

ppatel@NB:Mon Dec 30 01:24 PM ~/Documents/ : helm version
version.BuildInfo{Version:"v3.0.2", GitCommit:"19e47ee3283ae98139d98460de796c1be1e3975f", GitTreeState:"clean", GoVersion:"go1.13.5"}

Output of kubectl version:

ppatel@NB:Mon Dec 30 01:25 PM ~/Documents/: kubectl version
Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.0", GitCommit:"70132b0f130acc0bed193d9ba59dd186f0e634cf", GitTreeState:"clean", BuildDate:"2019-12-13T11:51:44Z", GoVersion:"go1.13.4", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.3", GitCommit:"b3cbbae08ec52a7fc73d334838e18d17e8512749", GitTreeState:"clean", BuildDate:"2019-11-13T11:13:49Z", GoVersion:"go1.12.12", Compiler:"gc", Platform:"linux/amd64"}

Context :
I am trying use merge capability for dict in template. Merge works perfectly as expected but during boolean values it fails in certain case.
values:

service_name: activity

common:
  replicas: 1
  mongo_ssl_enabled: true


deployment:
  service:
    activity:
      replicas: 2
      mongo_ssl_enabled: false

test-connection file :

{{- $overwrite := get .Values.deployment.service .Values.service_name -}}
{{- $service := deepCopy .Values.common | merge $overwrite -}}

### NOTES
common: {{ printf "%d" .Values.common }}
service: {{ printf "%d" $service }}

expected output :

---
# Source: aunsight/templates/tests/test-connection.yaml
### NOTES
common: map[%!d(string=mongo_ssl_enabled):%!d(bool=true) %!d(string=replicas):%!d(float64=1)]
service: map[%!d(string=mongo_ssl_enabled):%!d(bool=false) %!d(string=replicas):%!d(float64=2)]

Buggy output :

---
# Source: aunsight/templates/tests/test-connection.yaml
### NOTES
common: map[%!d(string=mongo_ssl_enabled):%!d(bool=true) %!d(string=replicas):%!d(float64=1)]
service: map[%!d(string=mongo_ssl_enabled):%!d(bool=true) %!d(string=replicas):%!d(float64=2)]

[bacongobbler]

See #5238. Use the mergeOverride function when dealing with boolean values. There are semantic differences when merging truthy values together that require being handled in a different way.

Thanks!