Spaces in file names are replaced by %20 in KNIME analytics but %2025 on the KNIME server

Dear KNIME experts,

I know that spaces should be avoided in filenames, but this is not considered carefully by many users. I recently came across a strange issue when combining a knime workflow with a python node that reads a file. In knime analytics spaces in filenames were replaced by %20. I deleted this string in the python script. But when I executed the workflow on a server, it failed because on the server spaces were replaced by %2025. I found this a bit strange. Is there any explanation for this behaviour? Thanks in advance

STefan