Xyloglucan acetyltransferase that catalyzes the acetylation of fucosylated Gal residues on xyloglucan side chains (PubMed:30083810). Predominantly catalyze 6-O-monoacetylation of Gal residues in the Fuc-Gal-Xyl trisaccharide side chains of xyloglucan oligomers (PubMed:30083810). Belongs to the PC-esterase family. TBL subfamily.