From the images your filter is defined only for a specific range, which is up to row 444. This was done when Data -> Create Filter
menu option was used when a range is already selected.
You can delete this filter by selecting Data -> Turn off Filter
, then recreating another for the whole sheet by selecting the first cell in the whole sheet, then selecting Data -> Create Filter
again.
Before creating filter, range selected:
![enter image description here](https://i.stack.imgur.com/fsj1E.png)
After creating filter, range selected:
![enter image description here](https://i.stack.imgur.com/gU3Tc.png)
Before creating filter, single cell selected:
![enter image description here](https://i.stack.imgur.com/NhTEO.png)
After creating filter, single cell selected:
![enter image description here](https://i.stack.imgur.com/Ochch.png)
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