the Advanced Spill Suppressor is missing controls and menu items in the Effects Control panel and doesn't funtion properly in this new Beta release (25.5.0 build 43)
I see this was reported some time ago, our apologies for not seeing your post sooner. Is this issue still occurring for you in the latest After Effects (Beta) builds? The latest available build is 23.1.0.17.
Thanks for reporting this issue and for any further information you can provide,