The Robins were beaten 2-1 in Division One South and West on Saturday
Bideford’s long journey to North Leigh in the Southern League ultimately proved to be a fruitless one.
The Robins were beaten 2-1 by the Millers in Oxfordshire on Saturday.
Sean Downing gave Bideford the lead in the first half before James Murphy equalised in stoppage time.
Matt Sysum got the deciding goal just before the hour.
The defeat leaves Bideford without a win in three, with their opponents leap-frogging them in the Division One South and West table.
Bideford manager Sean Joyce said: “We were dominant. We gave a bad goal away in injury time in the first half.
“The pitch at North Leigh is a steep one, but for long parts of the second half we penned them in going uphill.
“The only time they got in our box we gave it away, we were slack and they scored.
“It’s got to drop for us sometime.
“I can’t have a go at the boys at the moment. The last few results have been nowhere near our actual performance.
“Now we just need that rub of the green, a referee’s decision here or there.
“We’ve taken a point from the last three fixtures but really we could have had seven.”
The Robins went ahead after 34 minutes through Downing.
When a free-kick from North Leigh goalkeeper Manny Agboola went straight back to the away side, Downing was given the ball before bursting into the penalty area before firing in off the post.
The Millers got back on terms in stoppage time when Murphy latched on to a through ball and clipped the ball past the advancing Josh Colwill in the Bideford goal.
Billy Tucker had chances for the visitors in the second half, but it was the home side who went ahead.
Michael Hopkins’ corner was met at the near post by Sysum, who sent his towering header into the net.
Bideford rallied, but were unable to find an equaliser against some astute defending from North Leigh.
The Robins will be looking to bounce back next week as they take on two of the bottom three.
AFC Totton visit the Sports Ground on Saturday before a rearranged home fixture against Bridgwater Town on Tuesday evening.
But Joyce was keen to stress that the games were anything but a formality.
“They’re not gimmes – Wantage have shown us that.
“It’s when you see these games and you start to think you’ve got them won already, that’s when you’re in trouble.
“But we’ve done well in these last three games, and if we perform in both of these like we have the last couple of weeks we will be alright.