Tile disappears

I have an ongoing game of Tigris & Euphrates (version 4.1). The game is here: drive.google.com/open?id=1-3oAI … blkjaOUjkj .

The problems start after 04-bull.vsav. That file loads fine.

Then when you step through 05-archer.vlog everything seems fine:

  1. place a tile, gain a point
  2. place a tile gain a point
  3. refresh hand

My opponent (bull) reports the tile is flipped as in this picture:
drive.google.com/open?id=1qSR15 … 8HiWJKpAjy

When I reload the vsav (or any subequent vsav save attempt) the tile has disappeared entirely.

The next vlog seems to be okay but subsequently the tile has disappeared.

I am using Linux Debian buster (fairly fresh install) with an XFCE desktop. Bull is using Windows 10 Pro version 1909 OS build 18363.836. We are both using VASSAL 3.2.17.