Default tracker is not applied by default when selecting the tracker

[AlexWalletEnyx]

Description

When going to a "new ticket page", the template is directly in the description, based on the default tracker displayed by Redmine instance.
However, if we select another tracker for this ticket, the description is not updated so we need to click on "revert" then chose the good template (the default actually).

Would it be posible to revert and apply new template when changing the tracker on ticket creation?

Environment

Environment:
Redmine version 4.1.1.stable
Ruby version 2.6.2-p47 (2019-03-13) [x86_64-linux]
Rails version 5.2.4.2
Environment production
Database adapter PostgreSQL
Mailer queue ActiveJob::QueueAdapters::AsyncAdapter
Mailer delivery smtp
SCM:
Subversion 1.9.5
Mercurial 4.0
Bazaar 2.8.0
Git 2.11.0
Filesystem
GitMirror 2.11.0
Redmine plugins:
easy_baseline 1.4
easy_gantt 1.12
easy_gantt_pro 1.10
redmine_agile 1.6.0
redmine_checklists 3.1.18
redmine_git_mirror 0.8.0
redmine_issue_dynamic_edit 0.7.0
redmine_issue_view_columns 1.0.1
redmine_shortcuts 0.3.1

Visual Proof / Screenshot

Expected Results

Update the description with default template according to the tracker.

Actual Results

No change when changing the tracker.
We can see that if we set a void title to the ticket, the page reloads with an error and the default template of the default tracker is well applied.

Workaround

Manually revert and select another template (even if it is already the default).

Thx!

[ikalaushin]

Confirm this bug for

[JDQuackers]

This bug still exists on Redmine version 4.2.2