Sorry to hear this... sadly it is a known issue that can occur, depending on the circumstances. There are various reasons why it happens. I do believe WGT has attempted to implement a fix for some of the types of this regarding of quitting and improper WD or forfeiting by players. But it doesn't take into account all of the situations or delays in the match up process.
I don't know the details, but your situation sounds like the scenario where you may have been sitting waiting on a match... where not getting matched up, so you backed out to see how busy the room was, then restart in hopes of getting a match..
The problem is there appear to be delays in the screens being updated so despite not showing on your screen the game had made a match but the page had not updated and you could have backed out unknowingly … in turn you then are identified as having forfeiting yourself, which does prompt the 3 bogies.
This type of bug/glitch or timing issue has been going on for the longest time, at least 2 years that I know of. I have reported it multiple times Pre showdowns being used... WGT has often reimbursed me of the coins, but coins are not the issue or my concern.
The issue has much deeper ramifications now that showdowns are being played and bogies are input onto scorecards.
When people have no idea how long they may have to wait, yes … some get impatient, some if they are on a mobile device may even get a phone call or something else that forces them to back out when they believe they are doing so safely.
imho, it seems WGT could fairly easily implement a 45 or 60 timer for a match to be made, similar to the 45 sec you have to wait on a player to take their shot. If that time expires and no match is made, they should kick you out of attempting to be matched up and back into the lobby thus ensuring you do not back out accidentally. From what I have heard, this was implemented in the new addition of match play on PC EA when looking for a match, players are "timing out" while looking for a match.
If they can do this time out feature in that scenario then it could also be made for the coin rooms. Unless I am missing something.
Before when it was just coins, who really cares about the lost coins if you have a sufficient coin bankroll, unless you were playing a high stakes coin room. But now with showdown - this significantly impacts the scorecard adversely and players confidence in the event. This too should be fixed!