Checkbox missing when widget doesn't have options

I have a widget that doesn’t have options, it seem that when there is a widget with no options the option to enable this plugin is missing. I’ve tested this with a few widgets and any widget that doesn’t have options seems to have this problem. The one in particular I’d love to use this with is this one: https://www.ads-software.com/plugins/better-anchor-links/

https://www.ads-software.com/plugins/q2w3-fixed-widget/