MultiFileProcessor is unexpectedly normalizing text values in Excel files

Has anyone else experienced this issue with MultiFileProcessor recently?

We're seeing a problem recently where MultiFileProcessor is unexpectedly normalizing text values in Excel files and removing spaces between words. For example, values that originally contain spaces are being modified during processing, which then causes downstream validation failures. It wasn't happening before.

Any feedback or solution on this? I already tried refining prompts, but it didn't work as the output from the multifileprocessor itself is coming as incorrect (normalized) which is passed to call the rest functions.