As of wine-1.1.30, EasyUO window resizes to a 5x5 (or so) pixels square, making it impossible to even click the 'File' menu.

Here's a way around it (tested on Xfce):

Click the EasyUO slot in the taskbar (to reduce it) and open it again, it is now a 5x5 unusable window.

Now, reduce the window behind it (or open and reduce one) by clicking their slot in the taskbar, then triple-click the EasyUO slot in the taskbar.

EasyUO should now be back to its normal size.

Here is the test script one can use to test most of EasyUO commands:

;1 for event sysMessage, 2 for msg, 3 for display Ok
set %outputMethod 3 ;Default: 3

;paranoid tests related (tests EUO arithmetic,
;setting variables, etc.):
;=======================
set %paranoidTests #FALSE ;Default: #FALSE

;skill commands related:
;=======================
set %testSkillCmd #TRUE ;Default: #TRUE

set %SKILL_TO_USE HIDI ;Default: HIDI (hiding)
;See http://wiki.easyuo.com/index.php/ChooseSkill
;For a short skill names list

;GUI commands related:
;=====================
set %testGUICmd #TRUE ;Default: #TRUE

;Obsolete commands related:
;==========================
set %obsolteTests #FALSE ;Default: #FALSE
;Only meaningful if %obsoleteTests is #TRUE
set %playCD #FALSE

;Only meaningful if %playCD is true
set %CD_Drive D:

;End of configuration
;====================

if ( %paranoidTests )
{
 goSub paranoidTests
}

if ( %obsoleteTests )
{
 goSub obsoleteTests
}

goSub normalTests

goSub testGUI

sub output
 nameSpace push
 nameSpace local subOutput
 set !method %outputMethod

 set !msg
 for !i 1 %0
 {
  set !msg !msg , #SPC , % . !i
 }

 if ( !method = 1 )
 {
  event sysMessage !msg
 }
 else
 {
  if ( !method = 2 )
  {
   msg !msg , $
  }
  else
  {
   if ( !method = 3 )
   {
    display Ok !msg
   }
  }
 }

 nameSpace clear
 nameSpace pop
 return

sub paranoidTests
 nameSpace push
 nameSpace local subParanoidTests

 goSub output "Testing set command..."
 set !a 1
 goSub output "This should output 1:" , !a

 goSub output "If this outputs on one lin"
   +"e, the concatenation operator works"

 goSub output "Testing basic arithmetic..."
 goSub output "1+2=" , ( 1 + 2 ) , "2*3=" ,
   + ( 2 * 3 ) , "4/2=" , ( 4 / 2 ) , "5-7=" ,
   + ( 5 -7 ) , "ABS(-4)=" , ( ABS ( -4 ) )

 goSub output "Testing for command..."
 for !i 1 25
 {
  ;Dummy
 }
 goSub output "This should output 25:" , !i

 ;To be filled...
 ;repeat-until
 ;while
 ;pause
 ;if (+ else)
 ;goTo
 ;continue

 ;goSub (Well, we're in one...)
 ;halt-stop-exit (NVM testable in a script though)

 nameSpace clear
 nameSpace pop
 return

sub obsoleteTests
 nameSpace push
 nameSpace local subObsoleteTests

 set !a SET
 goSub output "Testing delVar... SET=" , !a
 deleteVar !a
 goSub output "This should output N/A:" , !a

 ;goSub output "Testing initEvents..."
 ;I don't know how to test for this one

 if ( %playCD )
 {
  goSub output "Testing playCD..."
  playCD %CD_Drive

  goSub output "Stopping CD play..."
  stopCD
 }

 nameSpace clear
 nameSpace pop
 return

sub normalTests
 nameSpace push
 nameSpace local subNormalTests
 set !b_error #FALSE

 if ( %testSkillCmd )
 {
  goSub testSkill %SKILL_TO_USE
 }

 goSub output "Warping mouse to 5,5"
 click 5 5 mc
 set %mouseTest ( #cursorX <> 5 || #cursorY <> 5 )

 goSub output "saving pixel at 10,15"
 savePix 10 15 1
 set !pixel #pixCol

 set %pixelTests #FALSE
 cmpPix 1 t
 {
  set !pixelTests #TRUE
 }

 %ouput "Testing contPos, "
   + "A gump will move on screen..."
 set !oldContX #contPosX
 set !oldContY #contPosY
 contPos 400 400
 set %contPosTest ( #contPosX = 400 && #contPosY = 400 )
 ;Testing a second time as last container *MIGHT*
 ;have been at 400,400 already
 contPos 0 0
 set %contPosTest ( %contPosTest && #contPosX = 0 && #contPosY = 0 )
 contPos !oldContX !oldContY
 if ( %contPosTest )
 {
  goSub output "Success"
 }
 else
 {
  goSub output "Failure"
 }

 goSub output Testing pause command (you'll need to hit 'Play' again if this worked)
 pause

 set !oldJournal #journal
 scanJournal 1
 if ( #journal <> !oldJournal )
 {
  goSub output journal was !oldJournal and is now #journal
 }

 goSub output Simulating TAB keypress (this should toggle War/Peace)
 key TAB

 goSub output Testing onHotKey, press and hold F1
   + while the UO window has the focus (not
   + EasyUO!)
 set !timer #sCnt
 set !b_endLoop #FALSE
 repeat
 {
  onHotKey F1
   set !b_endLoop #TRUE
 }
 until ( #sCnt > !timer + 30 || !b_endLoop )
 if ( ! !b_endLoop )
  goSub output onHotkey test failed

 goSub output Testing getUOTitle
 getUOTitle
 goSub output Title of UO window is: #strRes

 goSub output setUOTitle test (setting title to 'WineTest')
 setUOTitle WIneTest
 getUOTitle
 if ( #strRes = WineTest )
  set !result success
 else
  set !result failure
 goSub output setUOTitle test: !result
;findItem
;getShopInfo
;getUOTitle
;hideItem
;ignoreItem
;move
;msg
;nextCPos
;setShopItem
;setUOTitle
;scanJournal
;sleep
;target
;terminate
;uoXL
;wait
;event drag
;event exMsg
;event pathFind
;event property
;event sleep
;exEvent drag
;exEvent dropC
;exEvent dropPd
;exEvent dropG
;exEvent popup
;exEvent renamePet
;exEvent statLock

 set %1 ( ! !b_error && %mouseTest &&
   + !pixelTest && %contPosTest )
 nameSpace clear
 nameSpace pop
 return %1

;sub testSkill
;%1 : short name of skill to use
;Returns #FALSE if a test failed (verifiable
;ones only)
sub testSkill
 nameSpace push
 nameSpace local subTestSkill
 set !skill %1
 set !b_error #FALSE

 chooseSkill !skill
 goSub output Your skill in !skill
   + is: #skill

 goSub output !skill , " skill is currently:"
   + , #skillLock

 if ( #skillLock = up )
 {
  exEvent skillLock !skill locked
  set !newSkillState locked
 }
 else
 {
  exEvent skillLock !skill up
  set !newSkillState up
 }
 goSub output "It should now be:" , !newSkillState ,
   + "it is actually:" , #skillLock
 set !b_error ( !b_error || #skillLock <> !newSkillState )

 set %1 ! !b_error
 nameSpace clear
 nameSpace pop
 return %1

sub testGUI
goSub output Creating EUO menu
menu show 200 200
menu window size 100 500
menu window title wineTestEUOGfx
menu window color $FF0000
goSub output Testing menu window transparent (takes 10 seconds)
for %i 0 100 ;Loops from 0 to 100
{
    menu window transparent %i ;Sets the transparency of the window
    wait 2
}
goSub output If you can see through the menu now, command worked
goSub output Next command should hide the EUO menu window
menu hide

;TODO
;menu activate
;menu button
;menu check
;menu clear
;menu combo
;menu delete
;menu edit
;menu font align
;menu font bgColor
;menu font color
;menu font name
;menu font size
;menu font style
;menu font transparent
;menu get
;menu getNum
;menu hide
;menu hideEUO
;menu image create
;menu image ellipse
;menu image file
;menu image floodFill
;menu image line
;menu image pix
;menu image pixLine
;menu image pos
;menu image rectangle
;menu list
;menu set
;menu shape
;menu show
;menu text
;menu window color
;menu window size
;menu window title
;menu window transparent
 return

sub testNameSpace
 ;nameSpace local
 ;nameSpace global
 ;nameSpace clear
 ;nameSpace push
 ;nameSpace pop
 ;nameSpace copy
 return

sub testMiscs
 ;display
 ;execute
 ;linesPerCycle
 ;set
 ;send
 ;shutDown
 ;sound
 ;str
 ;tile
 return