Navigate to Moodle installation> theme> remui> templates> mypublic.mustache​​​​

Here changes are mentioned below as per the line number. If you do not find it in the line number then search the file.

Line 110 -
Old -
<li class="nav-item" role="presentation"><a class="active nav-link" data-t
New -
<li class="nav-item" role="presentation"><a class="nav-link" data-t

Line 112 -
Old -
<li class="nav-item" role="presentation"><a class="nav-link {{^ aboutme }}active{{/ aboutme }}"
New -
<li class="nav-item" role="presentation"><a class="nav-link"

Line 118 -
Old -
<li class="nav-item ml-auto" role="presentation"><a class="nav-link" data-
New -
<li class="nav-item ml-auto" role="presentation"><a class="nav-link active" data-

Line 123 -
old -
<div class="tab-pane active animation-slide-left" id="aboutme" role="tabpanel">
new -
<div class="tab-pane animation-slide-left" id="aboutme" role="tabpanel">

Line 190 -
Old -
<div class="tab-pane {{^ aboutme }}active show{{/ aboutme }} animation-slide-left" id="usercourses" role="tabpanel">
New -
<div class="tab-pane animation-slide-left" id="usercourses" role="tabpanel">

Line 242 -
Old -
<div class="tab-pane animation-slide-left float-right" id="userprefs" role="tabpanel">
New -
<div class="tab-pane animation-slide-left float-right active" id="userprefs" role="tabpanel">

Purge Cache in the Moodle site once the changes are made.