@RaiMan I've only been using SikuliX for a number months and so am still pretty new with the tool as well as the Python language. I'm currently using two versions of Mac OS, 10.12.6 and then I have a iMac on 10.13.2 which seems to be the problem child. Both Mac OS's are using Sikulix 1.1.2 and its the iMac that seems to be displaying the symptoms related this bug. Automation Setup:- iMac version 10.13.2 sikuliX version 1.1.2 (IDE) Java version 8 macbook pro OS version 10.12.6 sikuliX version 1.1.2 (IDE) Java version 8 Sikulix setup and test runs:- I have no problems with the macbook pro, all tests run smoothly and quickly with no [debug] KeyPress: extended delay: 10010, just the iMac. I have a single script with all my functions, then call upon them via another script. As I mentioned before, I'm pretty new to Python and coding in general. The following messages are displayed when i run tests via the iMac: [log] DOUBLE CLICK on L(2351,1246)@S(0)[0,0 2560x1440] (551 msec) [log] DOUBLE CLICK on L(1646,396)@S(0)[0,0 2560x1440] (548 msec) [log] DOUBLE CLICK on L(1813,362)@S(0)[0,0 2560x1440] (549 msec) [log] TYPE "NewTest#TAB." [log] TYPE "#ENTER." [log] TYPE "#TAB." [log] TYPE "A#TAB." [log] TYPE "14#TAB." [log] TYPE "MyStreet#TAB." [log] TYPE "Wollongong#TAB." [log] CLICK on L(2152,443)@S(0)[0,0 2560x1440] (525 msec) [log] CLICK on L(1972,488)@S(0)[0,0 2560x1440] (524 msec) [log] DOUBLE CLICK on L(1963,486)@S(0)[0,0 2560x1440] (549 msec) [log] CLICK on L(2144,482)@S(0)[0,0 2560x1440] (525 msec) [log] CLICK on L(2249,361)@S(0)[0,0 2560x1440] (524 msec) [log] CLICK on L(2220,482)@S(0)[0,0 2560x1440] (524 msec) [log] TYPE "2500#TAB." [log] TYPE "0255733978#TAB." [log] TYPE "