Using the 'class' icon in the properties window where there is a large CSS file

[jaydax1]

If you are using Bootstrap and try to select a class in the properties window you get a huge list which is difficult to navigate because there is no scroll bar. There's an arrow top and bottom of the list but scrolling down the list to find the item you want is far too slow and cumbersome. It takes 9 seconds just to scroll out the 'a's of Bootstrap! 

This list badly needs a proper scroll bar.

[Ben M]

You should be able to scroll with your mouse wheel or touch pad to go through the list quicker. Unfortunately, as DW is in minimal maintenance mode, while it is a good idea to make the lists smarter or add additional features, most likely it won't be added to DW at this point in time.

[osgood_ · Accepted solution]

If you are going to be using Bootstrap then most of those classes in the list you will probably never ever use............so you should try and remember the critical ones that you will regularly need..........it will take time. It must be a nightmare and very slow selecting from a huge list, even if scrolling.

[Nancy OShea]

When working with Bootstrap classes, avail yourself to Dreamweaver's code hints and auto-code completion. Code hints are less obtrusive & more convenient than panels.  See screenshot.

Dreamweaver is in minimal maintenance status.  No new features are planned for it.