If you needed more reminders that last November continues to haunt the Democratic Party, reporting that surfaced last week on how a multi-million-dollar surplus from Democratic National Convention was handled by the committee in charge of things should fit the bill.

When the DNC wrapped up in Philadelphia last summer and the host committee found itself with a $4 million surplus, it decided to carve out $1 million for bonuses to staffers and volunteers.

Gov. Tom Wolf has rightly criticized the host committee’s decision, saying the committee should have offered to give the money back to Pennsylvania, which in 2016 allocated $10 million to the DNC’s $86 million fundraising effort.

That money should have been viewed as an investment by taxpayers, all of whom — regardless of political affiliation — have an interest in seeing the state attract big-ticket events that bring economic benefit and attention with them when they locate in Pennsylvania.

It’s true that the state’s contribution wasn’t a loan — DNC officials had no obligation to pay the money back — but the notion that the party continues to shoot itself in the foot with Pennsylvania voters is hard to escape.

After an election year in which Democrats suffered an improbable electoral defeat at the national level — something widely attributed to the party being out-of-touch and too cozy with big-money interests — the DNC bonuses are more evidence that they still have much to learn.

Former Gov. Ed Rendell, who served as chairman of the convention’s host committee, should have known how the decision would play with voters. So it’s difficult to understand why the committee decided to confer generous bonuses on all of its 12 staff members.

Those checks ranged from $13,357 for an office manager making $3,000 per month to $310,000 for executive director Kevin Washo — who, at a salary of $13,000 per month, was hardly donating his time.

Doling out $500 bonuses to the volunteers who gave their time and effort to make the DNC a success is palatable — perhaps even laudable. Lining the pockets of political operatives and fundraisers who are already making hundreds of thousands of dollars is a tone deaf decision that will prove offensive to many Pennsylvanians and further cement the party’s reputation as a “spend ‘em if you got ‘em” operation.

A final indignity — and shame — in all this is that some of the leftover money went to good causes. The committee gave $750,000 to the Right Books Campaign, which is a project to give tens of thousands of books to elementary schools in Philadelphia. It also gave out grants to various city nonprofits, and paid off some $500,000 worth of city services that were used during the convention.

The problem is that no one cares about those gestures when you’re also shaving off 25 percent of a $4 million surplus to enrich already-well-paid staffers.

We’ll add it to the list of lessons Democrats must learn if they want to reconnect with voters and make headway at the ballot box in 2018.