Hello Vijay Kutty
Welcome to the Microsoft community.
You can see the official explaination in the following link that:" Task lists, like any other Loop components, are portable pieces of content that stay in sync across all the places they are shared. In addition to being portable, these tasks also sync with Planner and To Do making it available for users to manage their tasks from the applications of their choice. Listed below are some of the ways task lists can be created today. In future, more entry points will be added but the behavior should remain the same.”
In addition, the Microsoft forums provide technical support for users only. You can provide feedback on such development issues through official channels. According to the latest Loop blog on April 2nd, the Microsoft Loop team is also currently working on improving the task list component in Loop. Some new looks and features have already been added. If you would like to add the features you need or more, I sincerely suggest you to give your feedback as the Loop team is very much looking forward to users' suggestions and ideas to help improve it.
https://insider.microsoft365.com/en-us/blog/improved-task-list-components-in-loop
Best wishes
Angie - MSFT |Microsoft Forum Support Specialist