Jagged artefacts appearing on content created using older version (V24x)

[Kinnell90125]

Revisiting a Logo Artwork that I did last year (created using V.24x), the artwork has now changed ... there are jagged lines around the edges of shapes that were filled with transparency gradients. (see pic 1) This is not due to any extra nodes; the underlying geometry is the same (see pic 2). 

If I use 'Flatten Transparency' it solves the jagged lines, but adds extra 'blocks' in the corners (see pic 3). This is not something that used to happen.
This is not multiple objects stacked, so can't Ungroup and it isn't a compound path so I can't Release.

This is a duplicate of a posting on the uservoice.com service over a week ago.

[Doug A Roberts · Accepted solution]

Does it change if you zoom in and out or move the paths?

Does it change if you use View > Preview on CPU?

[Kinnell90125]

Ah, it's almost certainly the GPU vs CPU View issue that has been reported elsewhere.