Place a single pixel in bitmap mode? Photoshop says no.

[Niet beschikbaar]

This:

• Photoshop version 25.1.0 on a Macbook Pro M3 13" (Sonoma 14.2.1). 

• New document: 60 cm x 16 cm – 120 x 16 px – 2 dpi – bitmap mode.

• Select pencil tool to place 1 single pixel
• Program error.

I am getting my 1992  Macontosh LC out to do this simplest of jobs in Photoshop 2.0.
100% sure it will perform the tast effortlessly and without fail, unlike what passes for profesisonal software nowadays.

[davescm]

No problem, or error, doing that here, in Photoshop v25.3.1 on Windows 11

May be an issue with Sonoma - perhaps a current Mac user can confirm.

Dave

[Jeff Arola]

Yes for me macOS Ventura and Sonoma have the error with photoshop 2024 (ps ver 25.3.1) but not macOS Monterey.

https://community.adobe.com/t5/photoshop-ecosystem-discussions/why-can-t-i-paint-in-a-1bit-bmp-canva...

Until it gets fixed you could install Photoshop 2023 (ps ver 24.7.2) which does not have this issue.

Go to

/Applications/Adobe Creative Cloud/Adobe Creative Cloud

then where you see Photoshop under All apps, click the three little dots to the right of Open and click Other versions.

[Lumigraphics]

Reproduced in Sonoma 14.3, Photoshop 25.3.1. Pencil, brush tool, and Edit->Fill bring up Program Error dialog for bitmap documents. Interestingly, Invert works and then a white pencil is fine, either on black or when inverted again, on white. Switching back to black pencil gives the error again.

[Jeff Arola]

The issue appears to be fixed in the just released Photoshop 2024 25.4 update.