Reporter: Pepou
[Submitted to the original trac issue database at 10.49am, Saturday, 18th June 2011]

I'm regularly getting potlatch2 (reproduced on V2.2 Build 2.2-1-gdec4a94) locked up and unresponsive. Sometimes I notice that after clicking or deselecting any node or way it does not change their description bar at the left side (and then try immediately press Save, which successfully saves my (albeit unfinished, but at least some) work), but sometimes it is already late and after clicking Save, the whole potlatch area just gets faded out... and the edits were gone.

It happens at least on my each second edit (1-2 hours of work). And as I do not like to save "unfinished partial work"... it happens pretty often. On two different machines with Chrome browser.

After reading kerosin's similar report in Diary http://www.openstreetmap.org/user/kerosin/diary/14153, I've tried to reproduce it, and found one possible way to get Potlatch into such state:

Create some way (triangle or rectangle, does not matter, single point is sufficient), switch to advanced tag view and "accidentally" create two fresh "(new tag) (new value) (x)" lines instead of just one. Ooops! Lets delete one... but just the "(new value)" part in the Value column gets deleted. At this moment the object's properties bar is (b)locked - clicking any point or way does not change it. If you now say "Panic!" and press Save, potlatch is gone, fades out and... Germans say "Das war's". Farewell my data...

During testing I've now found out an "emergency break": if I notice some object has got multiple unfilled "(new tag) (new value) (x)" lines, I may completely delete this object and potlatch remains functional. That's fine with my fresh new object. But if it is someone other's nontrivial, complex object I've just accidentally modified (while wishing to add just one new tag)...

How to "accidentally" create multiple "(new tag) (new value) (x)" lines? I wish to make a double-click to add a new tag (but "accidentally" make a triple-click or one more double-click into a fresh "(new tag) (new value) (x)" line), or I press the Add button twice, and I immediately have (at least) two such lines. I believe potlatch might recognize that the line is not edited yet and might refuse to create another one.