Describe the bug

In version 2.0.0 a bug was introduced where if you provide a longer show delay(500ms and above), it will show the default browser tooltip based on the title.
This was not previously the case up until version 2.0.0-rc.28.

Steps to reproduce the bug

1. Add a popover/tooltip to a element
2. Add the directive with a hover trigger and a show delay of 500ms or higher
3. See that the default browser title appears before the tooltip/popover is shown.

Expected behavior

The tooltip or popover should override the default browser title and prevent it from being shown.

Versions

Libraries:

• BootstrapVue: 2.0.0 and later
• Bootstrap: 4.3.1
• Vue: 2.6.10

Demo link

https://codepen.io/Hiws/pen/qBWMpMg