Now I've started to play this game for the first time using Gog installer on my linux PC. Everything works fine excepting shop disappear bug (in Highpool in my case). Then I've googled it was always common issue in this game.

I have rolled characters and had few quests done when the bug appeared. There is solution for this bug to continue your adventure without starting new one. You have to use program named wasteland suite. You can find guide for fix in other web forum.

I also realized you can use installed game files in your standard dosbox installation. Then the game is in its original state, with older graphics, without music etc. So there is no point not to use enhanced version.

Only issue I still have with enhanced version is that the game in fullscreen doesn't fill whole screen. I tried to change output video system, set resolution manually and change aspect to false but then the screen was extended only vertically, not to sides and there were some strange graphic effect. When there was some person his upper part of head was there two times above. Original non-enhanced version of the game is in fullscreen fine in my standard dosbox settings.

Anyway the game is great and I really enjoy it very much.