tasklists don't work when including multiple of them from different pages

I have multiple projects which all have a "toDo" page which has only one tasklist. I try to

{include}

all of these pages to one page so I have all the tasklists in one place.

Now only the tasklist on the last page that is included works and all of the others say "Failed to instantiate action handler" ,when trying to add a new task to the tasklist (from the page which has included all of them).

All of the tasklists have their own unique name, but all of the pages are named "tehtäviä" (tasks in finnish). I tried to change the names of the pages also, but that didn't seem to help. This shouldn't affect because they get included with "project:tehtäviä" ?

You should be able to replicate the problem by:
1. Making a couple of spaces with a child page named "tehtäviä"
2. add a

{tasklist:unique name}

to all of these "tehtäviä" pages
3 make a space which will have all of these tasklist gathered
4. include in this one page all of the tasklist pages with

{include:spacename:tehtäviä}

5. try to add tasks to these tasklists ( only the last one should work)