The TAP can - according to Rebels Visual Guide.Eh - TIEs can't jump into hyperspace? At least, most can't - certainly not the TIE Fighters or TIE Advanced Prototype.
That seems like a bit of a plot problem, doesn't it? Weren't Ezra and Kanan, on stealing a TAP, worried they could not escape until the Rebel-captured Gozanti arrived and towed them all away?
Not a fan of explaining away inconsistencies, but...
Kanan only has encountered non-hyperspace-capable-TIEs, so probably he and Ezra just did not realise the Q-Tip can jump. Prototype and unfamiliar control counting in here too.
Deus ex PLOTHOLE as usual