Chase Bliss Blooper

Hi there! New to blooper. Just checking cause it might be user error:

When i record a loop of a synth like op-1, i hit the record button, and the loop starts running after i hit the record button again. All fine.

However, the transition at the end of the loop when it at starts from the beginning again is not smooth, you alway hear a short silence, which makes it barely usable for me.

Is there a remedy for this? How to edit start/end point? How to crop?