When you see nextTick, do you think of $nextTick?

This is exactly the kind of error that needs to be solved by using $nextTick

Vue performs asynchronously when updating the DOM. As soon as a data change is heard, Vue will open a queue and buffer all the data changes that occur in the same event loop, which means that a value assigned by vue will not take effect immediately, but will be updated when the next event is triggered. callback)

$nextTick is a delayed callback that is executed after the next DOM update loop. If you use $nextTick after modifying the data, you can get the updated DOM in the callback