The update action was calling set_current_balance (which triggers
sync_later internally) on every form submission, even when the balance
hadn't changed. This caused the account to enter a syncing state,
replacing the visible balance with a pulsing skeleton placeholder
until the sync completed.
Now we compare the submitted balance against the current value and
only call set_current_balance when it actually differs. Also removes
a redundant sync_later call that duplicated the one already inside
set_current_balance.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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