Excel on Android opens old version of file

I have a number of Excel files saved on my Google Drive. I'll update them using a laptop.

On my phone, I open Google Drive. I see that they all have the correct date and time from the last save. If I click the three dots, and pick "open with," the Excel app on my phone opens, but it pulls up the prior version of the file! It doesn't matter how long I wait to do this.

If I open the file into Google Sheets (from my phone), it is always the most recent version. If I look at "view information" I get a tiny thumbnail of the file, and I can see it's the most recent version. So the problem isn't with Google Drive. I've tried making the file available offline (to force an immediate download of the recent version to my phone's storage) and this doesn't help.

After the old version opens into Excel, I need to close the file (with "discard changes"), close the Excel app on the phone, and reopen the file from Google Drive, then I'll get the most recent version. Why is this happening?

And clearly, having to "clear a cache" every single time is a non-solution. I'm not going to go to Apps, Excel, Data, Clear Cache every time I want to look at a file.