Installed bash using brew not sourcing system wide `/etc/bash.bashrc`

Please fill out the issue checklist below and provide all the requested information.

[ ] ran a brew command and reproduced the problem with multiple formulae? If it's a problem with a single, official formula (not cask) please file this issue at Linuxbrew/homebrew-core: https://github.com/Linuxbrew/homebrew-core/issues/new/choose. If it's a brew cask problem please file this issue at https://github.com/Homebrew/homebrew-cask/issues/new/choose. If it's a tap (e.g. Homebrew/homebrew-php) problem please file this issue at the tap.
[x] ran brew update and can still reproduce the problem?
[ ] ran brew doctor, fixed all issues and can still reproduce the problem?
[ ] ran brew config and brew doctor and included their output with your issue?

To help us debug your issue please explain:

What you were trying to do (and why) I installed another bash shell by brew install bash
What happened (include command output) It was running fine actually, the problem is it didn't source the /etc/bash.bashrc
Step-by-step reproduction instructions (by running brew commands) Install bash using brew install bash change default shell chsh /home/linuxbrew/.linuxbrew/bin/bash restart terminal.

Linuxbrew / brew