jigglenauts2

Ahhh I see and yes that report is a good summary of the problem I am facing. Also Ice's comment about using a ticking area seems to be working wonders as well.

Ugh... I feel like I'm not getting anywhere with this. So to clear things up I have used this command 6 MONTHS with no trouble. 1. Even if it is the simulation distance how do I change this on bedrock? And 2. Why would this setting randomly change from being set to the correct distance to what it apparently is not non-sufficient? Currently my work around is just to make a new 4x4 along with a new command block anywhere I need to extend but this was not previously the case. I swear this is abnormal and a bug but don't think it will ever get fixed...

(But thank you Ice that's actually useful thanks for the ticking area idea, I will have to try that and see if that makes this better! 🙂)

Yea even then I've been able to use this command 6 months straight until a few days ago. It fails on the second command block even if its 50 blocks away. Did this Simulation Distance change recently? I just added a screenshot, I was able to make this with only one 4x4 and just placing new command blocks when the command was out of range. This no longer is the case however...

Sort of having the same issue on my end with my bug. I feel like something is definitely wrong with /execute and selectors. 

I'm having somewhat of a similar problem, however I am using execute @a[m=c,tag=brush] ^ ^ ^10 clone xyz uvw ~-3 ~-2 ~-3 masked normal. This command I use everyday to paint a selected region wherever my cursor is facing. Normally this would would work within a specific range of the repeating command block, and if I get out of range of the command block I place another with the same command. This is where it messes up the secondary repeating command block suddenly does not recognize the player even when I have the tag (brush) enabled. Even if I get rid of my primary repeating command block the command still executes where the original command block was and still will not run the command at the secondary. And yes I do have my render distance to 40 and I can even look at the region of blocks I am trying to clone. This issue seems similar to your report so I thought I'd give my two sense because I really need this fixed in order to keep building my large scale map.