Metadata writing error in 16.0.1.18

After running sucessful Batch Rename to a series of (PNG) files, editing metadata for those files consistently fails to apply those edits to the first file, where the metadata is more or less sucessfully applied to other selected files. (Sometimes, without regularity, one or two files, typically in the 20th to 24th position also fails to apply the metedata to on or two files, but this is not consistent.) Repeating the same metadata edits is sucessful the second time it's attempted to all files. This behavior seems to consistently occur after Batch Rename runs, and does not occur if metadata edits are attempted without a prior Batch Rename.