Did you try cleaning the browser cache? What is the IE version you are using?
Open IE and press F12. Change the browser mode to a different one from the list and try.
On the server where P6 + WebLogic are installed, it's IE 11
On my client PC, it's IE 11 as well
I am pretty sure that that the problem has only started since IE11 appeared, but that may be wishful thinking. I have tried clearing everything from the browser cache, with no difference in behaviour. I have also tried setting the emulation mode to IE8 but that didn't seem to make a difference either.
I have restarted the P6 web app several times, and cannot see any errors in the WebAccessLog.html except for a occasional minor one related to Struts - certainly nothing that seems related to ADF directly.
Whatever the issue is, Chrome is not affected, and I have now installed it on the server as well where it is working fine.
You are correct. It does appear to be IE11 related. We faced this issue some time back and uninstalled IE11 as this is not in the list of supported browsers for P6. You can review tested configuration P6 EPPM Release 8.3 Documentation Library
Try to run P6 web in Compatibility Mode. For this you have to click on cog wheel at right most side of IE 11, and add web url in list of compatibility mode settings. We tested P6 R8.2 SP 2 with IE 11 and didn't found any issue.
I've also had this trouble since updating to IE11. I was able to successfully access it by changing to compatibility mode, however, it only allows me add the root domain for compatibility mode, so now everything on our company intranet is running through compatibility mode, which is probably not optimal.
have you checked the Tested configuration agaisnt your version?