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This is the question I wrote in Japanese before.
Once again I will question in English. Excuse my poor English.
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This problem comes up in "Doit.im for Windows".
I am using both Windows 7 and 10, and I found it under both circumstances.
When I create a daily plan, I can input the estimate time before editing tasks, but no data may not be entered after edited any of tasks.
This problem never occurs if I do not "edit" tasks.
I signed out and signed in again, but this could not be solved.
Furthermore, I uninstalled the app and re-installed and yet the result is still same.
Your answer is much appreciated and I expect some improvement in the program.
Thank you very much for your question!
We've tested as follow:
1. Test1: I added a new task in Today list, edited it in Today by modifying its title and adding a reminder, then go to Daily Plan, estimated time can be modified;
2. Test2: I entered Daily Plan, edited one task's title, this time, estimated time can still be modified.
So I was unable to make your problem reappear. Could you please tell me how did you edit your tasks? Did you edit in a different way from mine?
Nice day!