A few comments.
Speed tape is not allways a sure thing, temp and time for sealant are large variables, they could have accidentially used a bit too much sealant and worked it under the tape.
A trick of the trade (not wanting the speed tape to yank out the sealant when cured) is to apply a little "little!!" joy jelly to the sealant. This can backfire as well if used in excess.
The surface applying the speedtape to must be very clean and dry, the picture makes it look a bit damp out (my suspect culprit).