Double spaces in item causes answers to be marked as wrong

Good Day!
The course http://www.memrise.com/course/663134/100-most-popular-irregular-verbs/ is broken now. It doesn’t take the righr answers. It seems that it’s happend 3 days ago.

Is your problem related to two words being in the same button, or perhaps you have a different problem?

Example 1:
Q: Write the forms of irregular verb "See"
A: See Saw Seen

This answer is not taken. But “SeeSawSeen” is taken. In some case “ThinkThought Thought” is taken.
The right answer typed with button is red too.

Your issue is slightly different than the one encountered by others.

The course creator did not properly space out all the words inside the database. I’ve corrected their mistake, now your answers will be accepted in Tapping / Tapping tests.

This issue might be related to our recent improvement.

It seems that some items are still wrong.
For example the forms of “read” are not taken.
“read read read” - red
"readreadread" - green

This should be fixed now, your answer will now be marked correct.

The problem is still here. “take took taken”

And how about now?

“feed fed fed” is broken. May be something else is broken too

Sorry for bothering
I don’t do that special )