Yes, it also hapeens in gold, I can't pick up swords

I've got this same problem. I accidentally threw my sword in the cave level by pressing the wrong key, and ever since, I've been unable to pick up any swords. I can pick up axes, shields, bone clubs, and maces, but not swords.

Has there really not been any help with this problem in four years? Most disheartening.

I'm having the same problem with the Steam version. I've been very careful to not throw my sword, and to quickload whenever I lose it through it being disarmed by an enemy.

This is a bug. Game think you still have this sword while you just don't. Sometimes it happens. Solution is simple press 2 and when Ragnar takes out a phantom weapon press q to throw it out. Now you can pick your weapon again. Greetings from Rune veteran.

doesn't work for me
I had to use an older save, and be careful not to throw the sword

I found a solution. (See last paragraph)

As mentioned before, I also think that the underlying issue is, that the game thinks that you still carry you sword. You can pick up any weapon only once, so it won't let you pick up a "new" sword.

Sadly, the mentioned trick of equipping and throwing a phantom sword did not work for me.

I tried cheats, but If a summon a new sword, I too can't pick it up.

I encountered the bug when I first met these snake plants, they threw away my sword and I could not pick it up again. I could also not pick up the next sword that I found. I reloaded to a savegame just before that, I still hat my sword, but once I threw it, I was unable to pick it up again, so maybe that bug is not so much related to those pesky plants. Now here is how to solve it:

Press Tab and type "cheatplease" to enable cheat mode. Press tab again and type "summon romansword" which will spawn the wrong sword, since i wanted to pick up a VikindShortSword. However, after equipping the roman sword, i can press 3 to switch to a club and if I then press 2 again I switch to the phantom Short sword I "had" the whole time. Now I throw away the roman sword, since I am no filthy cheater and continue playing with my appropriate sword. I suppose this fix generalized, just summon a weapon of that category that you do not have yet and try switching to the other ones. Once I reenabled my sword I could throw and pick it up again without any issues.

Here is an overview of all weapons: https://steamcommunity.com/sharedfiles/filedetails/?id=398935934

I'm glad I looked in here, the workaround with the roman sword allowed me to throw the phantom sword I was apparently carrying all along.