I have also come across this but not reported it yet (thanks for doing so!)
I suspect the read only property could be removed in
org-agenda-finalize-entries, which already does some modifications of the text
properties.
On Fri, 28 Feb 2025, at 11:05 AM, Rens Oliemans wrote:
> I'm not sure if this is a bug, but it feels like one and I don't see this
> behaviour documented anywhere.
>
> The "problem": If an agenda file is in column view (and therefore read-only),
> contains a date for the current week, and you open the agenda view for the
> current week, the agenda fails with the error string:
>
> Text is read-only: #("Type 'e' to edit property" ...)
>
> For more information, check the attached file, which will reproduce the error
> with emacs -Q. I tested this on current main and on release_9.6.15.
>
> If this is not a bug but a misconception on my part, please let me know! This
> errors the Org agenda and I therefore have to exit that, quit column view in
> the
> corresponding agenda file, and re-open Org agenda again, so I'd like to
> prevent
> this in the future. If it is a bug, I'd be happy to try and fix it, but I
> would
> need some pointers on where to start.
>
> Best,
> Rens
>
>
> Attachments:
> * test.org
