The way I did this (and as far as I know it is the only way) is to set the Sort Title on all the books to be the same as the title.
To do this, you go to Preferences, Tweaks and search for title_series_sorting and change it to
Quote:
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title_series_sorting = 'strictly_alphabetic'
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This will become the default for new books, but you need to update all your existing books, i.e. Make sure you don't have any filters applied, Press Ctrl-A to select them all, goto Edit MetaData / Edit Metadata in Bulk and tick the checkbox called 'Update Title Sort' and hit apply.