Describe the bug

A clear and concise description of what the bug is.

Steps to reproduce the bug

We have a link that shows a b-collapse element like this:

    <b-card-header header-tag="header" role="tab">
          <a v-b-toggle="'week-' + i" href="#" @click="getDefaults">{{week.dates.join(' - ')}}</a> 
    </b-card-header>
    <b-collapse :id="'week-' + i" accordion="weeks" role="tabpanel" @show="getDefaults">

Toggling visibility of the b-collapse element doesn't work unless we remove the @click directive (or set it to have no handler, like in the examples.)

Expected behavior

Clicking the link should show/hide the b-collapse element, even with an @click handler.

Versions

Libraries:

• BootstrapVue: 2.15.0
• Bootstrap: 4.5.0
• Vue: 2.6.11

Environment:

• OS: Linux
• Browser: Firefox
• Version: 76.0.1