Colorbars for contour, pcolor, etc. not working about proplot HOT 2 CLOSED

import proplot as plot
import numpy as np
plot.nbsetup()
# First make figure
f, axs = plot.subplots(ncols=2, nrows=2, width=7, hspace=0.2, wspace=0.3, top=0.5,
                       bottomcolorbars=True, bwidth=0.2, bottom=0.2,
                       proj='hammer', proj_kw={'lon_0':0},
                       # basemap=False,
                       basemap={(1,3):False, (2,4):True},
                       )
offset = 20
x = plot.arange(-180+offset,180+offset-1,60)
y = plot.arange(-60,60+1,30)
data = np.random.rand(len(x), len(y))
for ax,p,pcolor,basemap in zip(axs,range(4),[1,1,0,0],[0,1,0,1]):
    # adfdas
    m = None
    cmap = ['sunset', 'sunrise'][basemap]
    levels = [0, .3, .5, .7, .9, 1]
    levels = np.linspace(0,1,11)
    if pcolor:
        m = ax.pcolorpoly(x, y, data, levels=levels, cmap=cmap, extend='both', extremes=True)
        ax.scatter(np.random.rand(5,5)*180, 180*np.random.rand(5,5))
    if not pcolor:
        m = ax.contourf(x, y, data, levels=levels, cmap=cmap, extend='both', extremes=False)
        ax.scatter(np.random.rand(5,5)*180, 180*np.random.rand(5,5))
    ax.format(facecolor='gray2', suptitle='Hammer projection in different mapping frameworks', collabels=['Cartopy', 'Basemap'])
    if p<2:
        ax, c = f.bottompanel[p].colorbar(m, clabel='values', ctickminor=False)
    # print(p, ax._sharex, ax._sharey, list(ax._shared_x_axes))
    # if p==2:
        # raise Exception