Keyboard input sporadically disappears

Description I’ve experienced this problem several times now (and my coworker has as well) where the characters we type in a plotting legend show up briefly, but then disappear, and then sometimes come back and sometimes not. It also is usually not all the characters I type - they are sporadic.

• Version: 1.5.1
• OS: Ubuntu 20.04

Steps To Reproduce

1. Open a live connection (I used turtlesim running on the same machine as foxglove in this example).
2. Create a plot panel subscribe to several topics (it seems that this bug is easier to reproduce when Foxglove is given a lot to do)
3. Type out some topic names

Expected Behavior Typed words should appear on the screen as typed

Actual Behavior Typed words get jumbled, with characters randomly dropped, or dropped and then re-added later in the string.

For example, I might try to type “hello/test/123/abc”. Right after I type the “ab”, they go away, so I’m left with “hello/test/123/c”.

Or, the missing characters might come back. For example, if I type “this/is/a/test”, the “th” in “this” disappears and doesn’t come back, but also, “test” disappears, and does come back after a second, leaving us with “is/is/a/test”.

I captured a video of those two examples here, although its harder to understand if you don’t see where my hands are typing.

https://user-images.githubusercontent.com/43035541/161804578-f8bd82a7-7024-46a0-a09e-2f15352a0ae6.mp4

Sometimes the characters come back later in the string, which is the worst of all. For example, “test/123/abc” might come back as “test/1/ab23c”. I wasn’t able to get an example of that on camera though.

[jackiescanlon]

I haven’t had access to the high load system where I was seeing this occur the most, but in local testing at least, I haven’t had the issue again. Thank you so much!!

[foxymiles]

@jackiescanlon I’ve made some more improvements to the plot legend that will be in the next release. Hopefully this will finally fix this problem for you.