Update on this situation - a GM was able to mail my two missing Fractured Sparks, but it was to my main character who is already at 5/5 half-sparks instead of my bugged mage.
I let them know about the error, hoping they can be deleted and given to the correct character.
UPDATE #2 - I woke up this morning and got a response to my request for the sparks be deleted and sent to the correct character instead.
The GM gave me the same response my first few GMs did, telling me I did “A Golden Circumstance” so I wasn’t eligible for any catch up sparks. Did not address my request at all and seemingly did not read the prior GMs response where they clearly stated my character WAS bugged and I was eligible to be given the sparks 
I logged on and noticed that the mailed sparks on my main were deleted (not by me) which is fine, she wasn’t the bugged character anyways. But, I am back at square one with this whole situation, being told there is no problem and no solution being offered.
I have clearly reiterated my request for fractured spark reimbursement and made references to the reply and actions of the previous GM who did mail the sparks to my main, so fingers crossed that I get a GM that can follow up on that.
UPDATE #3 - I got another response, I understood it to say I am eligible to be given one fractured spark (half-spark) and that I am eligible to get the other half spark I’m missing from catch-up sources next reset. I checked my character and I did get mailed the 1 fractured spark.
GM response below:
Let me clarify the situation for you, step by step.
- The 2 Fractured Spark of Fortunes were sent to your character [Character-Server] was honest mistake.
- The character [bugged mage] appears to successfully finish the quest A Golden Circumstance. This means that the bonus fractured spark was awarded to this character.
However, your character still missing 1 fractured spark. I have sent it to your character Sentire. You can receive it from mail.
- Other sparks will be earned using a catch-up system, which will increase an amount of fractured sparks you can receive.
Anyone who is in this situation, I’d advise you to put in a ticket, and hopefully they can get you one of your missing sparks.
UPDATE #4
Well here we are post-reset, and I am back to being an entire spark behind once again. I did not receive the guaranteed half-spark from the Worldsoul quest, nor have I received my other missing half-spark through catch up despite doing multiple weeklies that should be eligible to award it.
Clearly the characters experiencing this bug are still incorrectly flagged somehow to straight up not receive ANY half-sparks. I will be opening a new ticket.