Unable to access Acrobat's Tool properties toolbar.
The Properties toolbar can become inaccessible (grayed out, or listing 'no current selection") when working with tools (such as the commenting tools) on 2 or more PDF documents. The active property toolbar only remains active on the PDF document where you started using a tool.
The Properties toolbar provides easy access to the properties for many tools and objects such as links, comments, form fields, media clips, and bookmarks. For example, if you select the Note tool, the Properties toolbar displays the current default properties for that tool. If you select a note in the document, the Properties toolbar displays properties for that note.
You can use the Properties toolbar to change many of the settings that appear there. A few items only provide information and cannot be edited.
Like all toolbars, the Properties toolbar can float or be docked in the toolbar area. The Properties toolbar is different in that it doesn’t contain tools and can’t be customized to hide options.