User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0 Build ID: 20180807170231 Steps to reproduce: Steps to reproduce: Requirement: A table with one or more <tr>, of which the first element is an<input type="submit"> Select one or more whole <tr> while starting the selection in front of the input-tag while going left->right or stop the selection after including the input-tag in the selection while going right->left. Now try to copy the selection to the clipboard. Either Ctrl-C or rightclick->copy works for reproducing the bug. I tested this most extensively on Firefox 61.0.2 but could also reproduce the bug on 60.0.2 and the current nightly (63). An example HTML-file is attached. Actual results: The clipboard stays unchanged. Expected results: The selected part of the table should have been copied to the clipboard.

Could you please create a video screen capture? To be sure that we understand the same steps to reproduce this issue. Thanks

I've made a small video of the bug and attached it to the bugreport.

User Agent:  Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 Build ID: 20180906232139 I manage to reproduce this on Windows 10 x64 with the latest Firefox Nightly 64.0a1 (2018-09-06) (64-bit).

Seems unlikely this is graphics related given it shows on screen as expected. Given copying the first few elements worked, copy/paste seems to be working in general, so it seems specific to the elements selected.