Why does my BTC transaction show up twice on Blockchair?

Hey fellow crypto enthusiasts. A few days back, I sent some BTC and when I checked the status on Blockchair, I noticed something odd. I sent 0.0015 BTC, but it looked like I made two separate transactions, which I definitely didn’t do. After a couple of days, they fixed it, but how does this even happen? How can one transaction appear as if it’s two? I was a bit freaked out at first, but when I checked my wallet, everything was good. Still, it's pretty strange... does this happen often? I’ll share a screenshot to make it clearer.

Looks like a glitch, the transaction checks out and there is only supposed to be one transaction being shown on the address. Probably just a bug that is specific to Blockchair. The next time this happens, try clearing your cache and see if it helps.

Definitely a bug in Blockchair's Blockexplorer. Notice that the TXID are the same? It means that its the same transaction. In the blockchain, the chance of two different transactions to produce the same TXID is 2^256 (nearly impossible to happen) which is also a collision in SHA256. Since the two transaction's TXID are the same, it means that Blockchair blockexplorer just had it duplicated due to a bug in their database or some sort.

Yeah I noticed the TXID was the same that's made me think it was a bug, but I was not sure because this technical stuff can I nothing about.  Thank you for that advice. Will sure try it if it happens again.