Created attachment 111213 [details]
screencap of layer preview mirroring layer in viewport.

Are you sure you haven't enabled canvas mirroring?

Created attachment 111215 [details]
attachment-19017-0.html

Yes. I attached an image as a comment in the report if you haven't checked
it out yet. I would see one image in the viewport but when I look at the
layout preview, everything is mirrored horizontally. I have not touched
canvas mirroring option at all for this file. The only time I did was so I
can save it in my desired orientation.

On Mar 5, 2018 11:28 PM, "Boudewijn Rempt" <bugzilla_noreply@kde.org> wrote:

> https://bugs.kde.org/show_bug.cgi?id=391457
>
> Boudewijn Rempt <boud@valdyas.org> changed:
>
>            What    |Removed                     |Added
> ------------------------------------------------------------
> ----------------
>          Resolution|---                         |WAITINGFORINFO
>              Status|UNCONFIRMED                 |NEEDSINFO
>                  CC|                            |boud@valdyas.org
>
> --- Comment #2 from Boudewijn Rempt <boud@valdyas.org> ---
> Are you sure you haven't enabled canvas mirroring?
>
> --
> You are receiving this mail because:
> You reported the bug.

Yes, I saw your screenshot and the only way that can happen is if you have mirrored the canvas.

Created attachment 111218 [details]
attachment-22839-0.html

OOOOOOOOOOOOOOOH. Okay! I just reproduced the problem. Did some googling
and found out the hotkey to mirror canvas is M and I must have hit it on
accident but mirrored image, not canvas. My apologies for the false bug
report. Thank you nonetheless!

On Tue, Mar 6, 2018 at 12:59 AM, Boudewijn Rempt <bugzilla_noreply@kde.org>
wrote:

> https://bugs.kde.org/show_bug.cgi?id=391457
>
> --- Comment #4 from Boudewijn Rempt <boud@valdyas.org> ---
> Yes, I saw your screenshot and the only way that can happen is if you have
> mirrored the canvas.
>
> --
> You are receiving this mail because:
> You reported the bug.
>

Thanks for the update; closing.