June 2019
So I'm not really a big fan of the recent changes in Caustic's tactical. It appears that Caustic can no longer put canisters in cramped and hard to see places (for example, under a car or certain crevices on walls). This limits the ability for Caustic to strategically put down his canisters. However, there is a bigger issue with this change, the fact that the canister would disappear entirely, instead of acting like it hit an invisible wall. Sure we get the tactical charge back, but a bad placement means that you failed to put down a canister, which wastes about 3 to 4 sec (?). Mess up again, and that's another few seconds of time could've spent running or attacking. What's worse is that sometimes you don't know if the canister will vanish or not because the boundaries that determine whether the canisters should exist are invisible themselves. A perfectly reasonable location, for example behind a rock, could be considered a "no-no" because the canister would clip the rock.
I'm not sure if this is a bug or a feature (since I couldn't find any update notes on it), but I'm going to assume it's the latter, and it needs a lot of fine tuning. Following this train of thought, I can assume the reason why this was implemented was that there was some issues with clipping, and that's fine, but instead of making the canisters disappear, the canisters should instead just hit an invisible wall and bounce back towards a place it would be deemed acceptable to place. This now just adds another thing to the list of problems that is Caustic's tactical:
June 2019
Yeah most of the times my placed canisters dont even go off , even if the enemy is right next to it.