Memory Allocation Rate in F3 freezes at high values

Description

In 25w18a, the memory allocation rate that’s displayed in F3 does not reflect the actual memory allocation rate. In 1.21.5, it works as expected.

How to reproduce

Create a datapack with many operations (such as ‘/data' on entities) and run it. The memory will increase rapidly, while the ‘Allocation Rate’ eventually freezes.

See the example datapack in the attachments and run the following in a repeating command block:

/function test:1