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Yesterday, I experienced a similar situation. I have several hidden wallets with numerous BTC addresses. Upon checking the blockchain explorer, I noticed an unfamiliar withdrawal from one of the addresses. However, when I checked my Trezor Suite, all my BTC holdings appeared to be intact. Despite this, the blockchain explorer displayed a withdrawal that Trezor did not acknowledge.
The withdrawal address was unfamiliar to me and contained only the BTC sent from my wallet address. I searched extensively but found no evidence that the address belonged to me. To be safe, I created a new hidden wallet and transferred all my BTC there. The blockchain explorer now displays the correct amount of BTC.
I am uncertain about the reason behind this discrepancy.