This occurs when the todo was created from a template.
On opening the existing todo, the due date is reset to the current date. Can be editted back to the original setting OK. Does save the reset date!!! if not corrected.
A real pain. This has been happening for quite a while now.
I am running Korganizer 5.2.3 under KDE 5.25.0
Steps to Reproduce:
1. Create todo from template, set dpecific due date. Save it.
1a. Select the todo - info box shows correct due date.
2. In same session or a new session on another time or day open that todo.
2a. Select the todo - info box shows correct due date.
3. Open edit Dialog - now has current date in the due date, not whatt was previously shown.
Date is reset if you dont catch it and correct it.
No change to date
I can confirm this.
Unfortunately, templates are currently unusable.
*** This bug has been marked as a duplicate of bug 332048 ***