Problem with presets on iPad

I have imported a couple of user presets from Lightroom Classic for use on the iPad using File->Import Profiles&Presets in Lightroom (non-Classic) and letting them sync to the iPad from there. When multiple presets are applied on the iPad, they overwrite each other’s settings. For example, I can apply a vignette with one preset, then apply the second to apply Split toning, and the vignette is reset. This behavior does not occur using the same presets in Lightroom (non-Classic) on the desktop. Has anyone else encountered this problem and have a solution?