Lately I've been having trouble adding attachments to e-mail messages I compose, or saving attachments from e-mail messages I am reading. The file selector dialog appears, but after selecting a location, the attachment usually doesn't get attached/saved. No error dialog is displayed, though an error message does appear in the Error Console. Usually if I repeat the process, it works the second time around.
Sample steps to reproduce: Right-click on a message attachment. Select "Save As…". File dialog pops up. Navigate to a directory in which to save the file and press "Save", or simply type a full path in the "Name" field and press enter. The file dialog disappears, but the file doesn't get saved to the directory. The following gets logged to the Error Console:
This happens with the openSUSE 42.3 package of Thunderbird 52.3.0 (64-bit). So far I haven't been able to reproduce it in safe mode, though it does happen in normal mode with all add-ons disabled. I haven't been able to reproduce it with the official Mozilla binaries.14:52:53.968 NS_ERROR_MALFORMED_URI: Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsIMessenger.saveAttachment] 1 msgHdrViewOverlay.js:1835
AttachmentInfo_save chrome://messenger/content/msgHdrViewOverlay.js5
HandleMultipleAttachments/actionFunction chrome://messenger/content/msgHdrViewOverlay.js50
HandleMultipleAttachments chrome://messenger/content/msgHdrViewOverlay.js11
oncommand chrome://messenger/content/messenger.xul:1:1
Anyone else experiencing the same issue or know what the cause might be?