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What can we fix in Illustrator (desktop)? Vote or report a bug — one problem per entry, please.

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'Long fake mirage curved path when zoomed in at maximum' has been merged into this idea

Phantom lines at 315° are drawn in Outline mode at large zoom levels

Illustrator CC 22.0.1 This has happened occasionally in the past few versions.
I'll create an object with the pen tool, and close the object. When I zoom to make modifications on the path I sometimes see a path shoot off to the right at ~315° from one of the anchor points and it looks like the path connecting two anchor points isn't there. As I move it around or zoom out it'll disappear, but if I move back it comes back. Editing the object isn't affected, but it is highly visually distracting. Attached video file illustrates.

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  • Anonymous commented  ·   ·  Report

    I used the Object > Expand on a stroke path I created
    When I zoom in to like 12750% or more, I see this long pen line that doesn't connect to the next anchor point, but when I zoom out it disappears like it was never there.
    It's nothing much, but it is annoying to keep seeing when I work.

    Windows 10
    25.3.1

  • Doug Milllhoff commented  ·   ·  Report

    Not clear this is actually GPU-related.
    This bug dates back 32 years, all the way to Illustrator 1.0, when Adobe used the term "QuickDraw" to describe it. Terminology has changed, the bug has not. It has happened on every version of Illustrator, on every Mac, under every operating system.
    I've sent the attached screenshots and videos in the past, no response.
    The bug manifests as stray lines or incorrect vectors at certain seemingly-random resolutions.
    In preview mode, in addition to above problems, (possibly a different bug), I often get sectors or areas that do not fill or redraw correctly. Sometimes a black rectangle where none should be, sometimes just blank white space.
    sometimes some stray diagonal lines, often when I 'move around' in a document in preview mode, new areas do not "refresh".

Illustrator (Desktop) Bugs: Rendering Issues (GPU, CPU)

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