Mine does that too. Maybe not as far out as yours though.
I kinda watch it from time to time, seams to work its way up about an inch.
Generally just check it and push it down during fuel fills. Have read of some owners
pinching the top of the dip stick tube a bit to hold it in a bit better. Haven't got too excited
about trying that myself.
05 TJ RME 42RLE with some things
05 KJ CRD 545RFE, GDE Eco tune, Franky II, Al's 4.5 A-arms, JK Rubi Moabs, Silent Armors 245-70-17's, Spidertrax Adapters, Rola Basket, Fumoto Valve, Pinch welds pounded - Sold 2015