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Created attachment 157744 [details] thread dump While debugging, I got an NPE (cf. issue 257091) multiple times. At a certain point, the "exception report dialog" came up, but was not responsive. In fact, nothing was responsive anymore & I had to kill the NetBeans process. From looking at the thread dumps, it seems there was a deadlock over an org.netbeans.modules.web.inspect.webkit.WebKitPageModel object (see attached thread dump). I also tried to make thread dumps with jstack and the "-m" and "-l" options, for a more detailed dump, but doing so hung jstack. Product Version: NetBeans IDE Dev (Build 201512070002) Java: 1.8.0_60; Java HotSpot(TM) 64-Bit Server VM 25.60-b23 Runtime: Java(TM) SE Runtime Environment 1.8.0_60-b27 System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)
Created attachment 157745 [details] another thread dump After restarting NetBeans, starting a project with the Chrome debugger, and doing "Start Inspect in NetBeans Mode", it hung again. This time I didn't get the NPE from issue 257091. The issue seems to be the same: 1 thread - locked <0x0000000794173970> (a org.netbeans.modules.web.inspect.webkit.WebKitPageModel) while 2 others are - waiting to lock <0x0000000794173970> (a org.netbeans.modules.web.inspect.webkit.WebKitPageModel)