Options not showing on OpenFX Filters

I've only just began using Davinci Resolve 16 on my iMac for the past few days and after some basic editing I thought I would try and add motion blur to a moving graphic. I put a drop shadow on the graphic no problem but them moment I add a second filter, no adjustment options appear on that second filter inside the inspector panel.
If I remove the drop shadow and put a different filter, I can get options, but never when I add two filters, no matter which combination of filters I try.
Is this a limitation with the free program, that I can only get options on one filter on one clip at a time, or am I missing something?
I searched Google but could not find anyone else having this problem.
If I remove the drop shadow and put a different filter, I can get options, but never when I add two filters, no matter which combination of filters I try.
Is this a limitation with the free program, that I can only get options on one filter on one clip at a time, or am I missing something?
I searched Google but could not find anyone else having this problem.