Options menu doesn't have enough scroll space for Plugins section (in cata classic)

[fryguy1013]

Addon Version

v0.3.18

World of Warcraft Version

Cataclysm

Describe the bug

See image:

It looks like the plugin section exists beyond the scope of the scroll bar, so it cannot be scrolled to.

Steps to reproduce

Have a plugin.
Open the options menu.
Try to access the settings for the plugin.