pinch-to-unzoom gesture resets zoom level to max in google maps

I am seeing this as well. Once you zoom in, you basically cannot zoom back out making the app unusable. I've witnessed crashes a few times as well trying to restore the zoom level back to normal so I could continue to use the app. I will try to get some crash files

Per Bill’s suggestion, I tested with a UA string override, pretending to be chrome on android, but that didn’t help.

I have tested with a bunch of older images on flo (Nexus 7).

 - image #203 from the utopic channel (2014-08-21) which has oxide 1.1.1-0ubuntu3 doesn’t exhibit the issue
 - image #243 from the utopic channel (2014-09-17) which has oxide 1.2.0-0ubuntu1 has the issue
 - all images after that seem to have the issue, so it’s not a new problem apparently

That puzzles me: if the issue is that old, we should have spotted it long ago.

I checked and there are no significant changes in webbrowser-app to the default UA or related overrides that might explain the issue.

rtm image #9 on krillin also exposes the problem with the current Google Maps code. I start to suspect a change in their client code which changes the way the touch gesture "heuristics" are working on devices (depending on the SW version, device resolution, etc.)

Also worth noting is that on a nexus 4:

(as stated by Olivier above) image #203 from utopic w/ oxide 1.1.1-0ubuntu3 works fine,

image #203 from utopic w/ oxide 1.2.5-0ubuntu1 does NOT work, and has the issue,

Based on the comments it looks clear that it's an Oxide regression. Do we have any more detailed information about what changed between those revisions that might be causing the problem?

While Alex keeps investigating a fix (he got some events to be unfiltered to fix the zoom out case), we observed the following :
- the bug affects Google Maps primarily
- it occurs both in webapp-container and webbrowser-app, ie the container differences don't seem to be the root cause of the issue or to make things worse or better
- this seems to confirm this is between webapps and Oxide/blink

Further we verified that the pinch to zoom/unzoom does not affect other websites: Google Search for example is unaffected, nor does it affect apps like Here Maps nor OpenStreetMap, even if they use a similar interface.

Thus, the issue with events being filtered out erroneously is still related to the particular webapp, ie the HTML5 elements used for its interface, and JS handling code for events management /inside the webapp itself/.

Investigations continue.

This is caused when we get a touch event from Qt before getting an ack for the previous touch event from the renderer, which results in us sending touchend events more than once

Fixed in http://bazaar.launchpad.net/~oxide-developers/oxide/oxide.trunk/revision/951