You can open tabs in Stashpad fully or in preview mode.
To open tabs fully from the left side bar, use double click. You can also convert a Tab that's open in preview to one that's fully open using
Opening tabs in Preview can help you avoid opening up too many tabs. Use single click to open a tab in preview or any keyboard navigation shortcuts to open a tab in preview mode.
As soon as you type or take action in a Preview tab, it will be opened fully. You can also double click on the tab to open it fully.
Use CMD SHIFT [ and CMD SHIFT ] to navigate between tabs.
Hit the 'X' button on the current tab to close it.
Hit CMD ALT t to close all other tabs.