improve changes documentation

brokkoli71 · dstansby · web-flow · commit dc368121b2c6 · 2025-01-29T11:38:20.000+01:00
Co-authored-by: David Stansby &lt;dstansby@gmail.com&gt;
diff --git a/changes/2755.bugfix.rst b/changes/2755.bugfix.rst
@@ -1 +1,2 @@
-Upon creation, an empty ``zarr.core.buffer.cpu.NDBuffer`` is filled with zeros to ensure deterministic behavior.
+Upon creation, an empty ``zarr.core.buffer.cpu.NDBuffer`` is filled with zeros to ensure deterministic behavior.
+This fixes a bug where Zarr format 2 data with no fill value was written with un-predictable chunk sizes.

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`		-Upon creation, an empty ``zarr.core.buffer.cpu.NDBuffer`` is filled with zeros to ensure deterministic behavior.
	`1`	+Upon creation, an empty ``zarr.core.buffer.cpu.NDBuffer`` is filled with zeros to ensure deterministic behavior.
	`2`	`+This fixes a bug where Zarr format 2 data with no fill value was written with un-predictable chunk sizes.`