It appears that another lot of UTXOs from that address: 34Y6nb5SRxAGkozUpyKa59Qq7f87acC98s (along with UTXOs from other addresses) were consolidated into 39ycTMCUiC7yqABzR1sdaTbUhsGFi7cQ2Z. If you didn't execute this transaction, it's likely that your seed has indeed been compromised.
Yes that was me, I moved everything before posting the transaction IDs, seed still safe ...