transition_reveal() messes up geom_path() in version 1.0.8

[yutannihilation]

Sorry for filing an issue with not-so-minimal reprex. It seems some behavior around transition_reveal() changed unexpectedly on version 1.0.8. As this is about transition_reveal(), this might be the same problem as #468, but I'm filing a new one in case this is a different problem.

Expected (generated with gganimate version 1.0.7)

Actual

library(string2path)
library(ggplot2)
library(gganimate)

d <- string2path("蹴", "Noto Sans JP")
d <- tibble::rowid_to_column(d)

ggplot(d) +
  geom_path(aes(x, y, group = path_id),
            linewidth = 2, colour = "purple2", lineend = "round") +
  theme_minimal() +
  coord_equal() +
  transition_reveal(rowid)
#> `geom_path()`: Each group consists of only one observation.
#> ℹ Do you need to adjust the group aesthetic?
#> `geom_path()`: Each group consists of only one observation.
#> ℹ Do you need to adjust the group aesthetic?

^{Created on 2022-12-17 with reprex v2.0.2}

[yutannihilation]

It seems transition_reveal() skips some data points for some reason?

library(string2path)
library(ggplot2)
library(gganimate)

d <- string2path("&", "Arial", tolerance = 1e-4)
d <- tibble::rowid_to_column(d)
d2 <- dplyr::select(d, !rowid)

red <- alpha("red", 0.2)

ggplot(mapping = aes(x, y)) +
  geom_path(data = d2, aes(group = path_id), colour = red) +
  geom_point(data = d2, colour = red) +
  geom_path(data = d, aes(group = path_id)) +
  geom_point(data = d) +
  theme_minimal() +
  coord_equal() +
  transition_reveal(rowid)
#> `geom_path()`: Each group consists of only one observation.
#> ℹ Do you need to adjust the group aesthetic?
#> `geom_path()`: Each group consists of only one observation.
#> ℹ Do you need to adjust the group aesthetic?

^{Created on 2022-12-17 with reprex v2.0.2}

[mccarthy-m-g]

See also the reprex in #445 which was broken in v1.0.8

[ddeannd]

Figured I would add to this for another test case. I wish I checked here before fumbling around for a few hours trying to figure out what was wrong. A simple line chart with geom_line() also suffers from this bug, but only on the final frame from what I can tell. Every line but one will revert to it's previous value, no matter how long the x axis is. Here is an example:

I made a post on stackoverflow regarding this, as well. https://stackoverflow.com/questions/74971922/gganimate-transition-reveal-with-geom-line-breaking-on-the-final-frame